If the screwworm closed your milk route tomorrow, could your farm take the hit… or would you be out of options overnight?
EXECUTIVE SUMMARY: Alright, let me give it to you straight—everyone thinks plant shutdowns and milk dumping are old news, but one parasite on the border could upend your whole operation. The government’s putting $750 million into a new fly factory in Texas, and that’s not hype—APHIS says it’s the only way to stop the screwworm, which showed up just 370 miles south of us. Our industry generated over $780 billion in value last year, with Texas dairies accounting for $3.4 billion alone (USDA NASS). Butterfat averages are up too—4.15% nationally in 2023—but if quarantine hits, none of that matters if the milk truck can’t get to your tank. Herd expansion’s happening, feed margins have just improved by $150 a head in some spots, but more cows mean a bigger risk if disease shuts the plant down. This isn’t just a Texas phenomenon—other countries have dealt with screwworm infestations, and the same market fluctuations apply globally. If you haven’t checked your insurance for quarantine or lined up backup processors, you’re gambling with more than just milk prices. You owe it to yourself—and your bottom line—to get ahead of this now.
KEY TAKEAWAYS
Every farm needs a quarantine plan: losing access to your main processor (even for just one day) could mean dumping thousands of dollars’ worth of high-butterfat milk—just ask dairies who remember dumping during the Covid pandemic.
Check your policy exclusions: Most Dairy Revenue Protection (DRP) plans do not cover lost milk if you’re shut down due to a screwworm quarantine—call your broker and obtain confirmation in writing this week.
Lock in processor and hauler backups: Farms with two+ alternatives for milk hauling and processing have a 90% higher chance of staying operational during regional shutdowns (USDA, 2025).
Boost on-farm biosecurity: Tighten up visitor logging, water sanitation, and fly control now; screwworm loves dense herds—especially with today’s feed-driven expansion.
Track your margins and herd health monthly: With national butterfat at 4.15%+ and feed margins improving ($150/head/year in some Midwest regions), don’t let a quarantine erase those gains—monitor components and costs, and keep your contingency plans sharp.
The thing about biosecurity emergencies on a dairy is that the worst ones always show up when you least expect them. Maybe you’re finally getting a break on feed prices—or your herd’s butterfat is trending up—then, bang: there’s talk of quarantine and sterile flies on the news. The New World Screwworm, a parasite we mostly remember from history books, is officially back on the industry’s radar. And trust me, USDA’s $750 million factory in Edinburg, Texas, isn’t window dressing. It’s the kind of investment you only see when there’s real trouble brewing, a fact underscored by a recent USDA APHIS announcement.
A $750 Million Problem at the Border
Here’s what really grabs me: according to the latest IDFA data, dairy’s 2025 economic impact is over $780 billion nationwide. For us in Texas, official USDA stats peg last year’s dairy cash receipts at around $3.4 billion. Now layer in New Mexico and the southern region, and you’re protecting milk sales north of $4.5 billion. So when screwworm was sighted just 370 miles south of the Texas border in July, folks around here stopped calling this hype.
When the Milk Truck Can’t Roll
Let’s talk about what this means in real barn terms. Beef producers can stall shipping for a couple of weeks if needed, but what about a screwworm quarantine affecting a dairy? Your butterfat can be pushing 4.2%, but if the truck can’t get to the farm, those 85-pound cows won’t get you paid. The national average butterfat has climbed to 4.15% in 2023 and 4.07% in July 2024. It’s hard-won progress, but if the trucks don’t come, your check reads zero.
Market Pressures Magnify the Risk
So what is USDA really doing about it? This fly factory in Edinburg—the first of its kind—will produce 300 million sterile flies a week to mitigate the risk region. It’s modular, featuring automated monitoring and quality checks, which count flies hourly for accuracy (USDA APHIS announcement). What’s interesting is how they’re pairing these sterile fly releases with old-school cowboy border patrols and high-tech molecular diagnostics: mounted officers logging GPS movements, and labs checking flies for gene markers. This is a fascinating development because for decades, SIT was a small-scale tool. If consistency drops for even a week, you’ve got a window for screwworm to sneak in.
The critical detail here is that strong margins are tempting everyone to add cows. Milk prices are sitting around $22/cwt for most Southwest contracts, and feed costs are in a rare sweet spot—some West Texas herds are banking more than $150/cow in annual savings. But herd expansion, as confirmed by recent USDA NASS surveys, is really concentrated among the top-performing third of herds, not across the board. Denser barns, more cows—any outbreak now spreads risk (and losses) even faster.
The Insurance Gap: Are You Covered?
This brings me to insurance, and I’m not going to sugar-coat it. Most Dairy Revenue Protection and livestock policies explicitly exclude quarantine-related losses, according to the USDA RMA’s 2025 DRP update. If you haven’t reviewed the fine print since your last renewal, call your agent tomorrow. As agricultural risk consultant Dr. Anna Jessup warns, “A standard DRP policy is designed to protect against price volatility, not logistical failure. Producers assume their policy covers any event that prevents them from receiving their milk check, but quarantine is a specific exclusion in nearly every contract. It’s a devastating blind spot.” Contingency contracts with backup processors aren’t “nice to have”—they’re baseline survival right now.
A clear signal of this new reality comes from one of the larger co-ops in the Panhandle. After a near-miss border shutdown last spring, every member farm is now required to secure at least two alternate milk routes—no exceptions. That’s the sort of operational change that tells you the risk is real.
Action
Why It Matters
Frequency
Biosecurity visitor log
Track disease entry risks
Daily
Water trough sanitation
Prevent vector breeding
Weekly
Dry lot maintenance
Lower fly numbers
Monthly
Review insurance policy exclusions
Avoid denied claims in shutdown
Annual/Renewal
Backup processor/hauler agreements
Prevent milk dumping
Annual/Review
Your 5-Point Quarantine Action Plan
Audit your biosecurity protocols: Is every visitor logged? Are water troughs scrubbed weekly? Are dry lot surfaces maintained?
Confirm insurance language regarding quarantine losses: Request a written summary of coverage and exclusions to ensure clarity. If it’s unclear, escalate or shop the market.
Secure alternative processor and hauling contracts: Obtain written confirmation that your milk will be processed if your primary route is closed.
Benchmark feed cost and butterfat targets using processor statements and Hoard’s Dairyman national reports.
Install or update herd health monitoring tech: Ensure sensors are logging SCC, temperature swings, and alerting you before an outbreak, not after.
Proactive Resilience or a Painful Lesson?
It’s not about panic—it’s about fact-based resilience. Screwworm isn’t theoretical, and neither is the impact of a quarantine. The $750 million fly factory is proof that this is at the forefront for national agricultural planners. The next six months will sort out which dairies took the right steps—and which are one border shutdown away from writing off a month’s milk.
So before you hang up your boots today, double-check: Are you on the proactive side of tomorrow’s headlines, or just waiting for the call no one wants to get? That’s the real talk every dairyman should be having before this screwworm story turns local.
Complete references and supporting documentation are available upon request by contacting the editorial team at editor@thebullvine.com.
Learn More:
Biosecurity: Your Best Defense Against Disease – This article breaks down the fundamentals of creating a robust, farm-specific biosecurity plan. It offers practical strategies for managing visitor access, animal movements, and sanitation, turning the main article’s warning into an immediate, actionable defense against disease entry.
Dairy Market Volatility: The New Normal – This piece provides the strategic market context for why managing unexpected threats is crucial. It explores how to build financial resilience against supply chain shocks and price swings, complementing the main article’s focus on the economic impact of a quarantine.
The Digital Dairy Farm: How Technology is Reshaping Herd Management – This feature dives into the specific herd health monitoring technologies mentioned in the action plan. It demonstrates how sensors, data analytics, and automation can provide early warnings for health issues, enhancing your farm’s biosecurity and operational efficiency.
Join the Revolution!
Join over 30,000 successful dairy professionals who rely on Bullvine Weekly for their competitive edge. Delivered directly to your inbox each week, our exclusive industry insights help you make smarter decisions while saving precious hours every week. Never miss critical updates on milk production trends, breakthrough technologies, and profit-boosting strategies that top producers are already implementing. Subscribe now to transform your dairy operation’s efficiency and profitability—your future success is just one click away.
$950 lost per infected cow vs $5 vaccine cost – California’s H5N1 numbers will shock you into action
EXECUTIVE SUMMARY: Here’s what’s keeping me up at night… California just proved that dairy disease prevention is stuck in the 1980s while we’ve modernized everything else. The numbers from Cornell are brutal – infected cows lose 901kg of milk over 60 days with production dropping 73% from 35kg daily down to just 10kg. That’s $950+ per affected animal, and some larger operations are seeing $1,200+ when you factor in all the hidden costs. Meanwhile, Medgene’s vaccine costs $5 per cow annually – do the math on a 1,200-head operation and you break even if just 5 cows get clinical disease. France already eliminated HPAI in their duck industry with vaccination while maintaining export markets, so the playbook exists. With milk prices running stronger than they have in years, you can’t afford to keep playing defense when prevention costs less than one week’s feed bill per cow.
KEY TAKEAWAYS
Immediate biosecurity ROI beats waiting – Feed protection upgrades ($15,000-25,000 range) eliminate primary transmission pathways now while vaccine manufacturing scales up. That Merced County operation invested $22,000 and stayed clean through two nearby outbreaks this summer.
Your milk check calculations just changed – With current Class III prices running stronger than recent years, production disruptions hit harder than during previous market downturns. Agricultural economists are seeing 20-30% higher revenue losses per cow due to improved base production and market premiums.
Regional strategies matter more than you think – California’s warm climate creates different viral persistence challenges than Wisconsin operations. Work with your veterinarian now to tailor protocols for local conditions because a successful northern strategy needs tweaking to work in warmer climates.
Timeline reality check for 2025 – Conditional vaccine approval appears likely within months, but manufacturing scale-up takes time. Don’t wait for vaccines to upgrade disease prevention protocols – smart producers are implementing enhanced biosecurity now and planning vaccine integration later.
Cross-species transmission isn’t theoretical anymore – Among 17 affected states, 12 have seen poultry outbreaks directly traced back to infected cattle operations. Your biosecurity decisions affect more than just your dairy – they impact the entire local agricultural ecosystem.
The thing about California’s dairy industry is that when they talk, everyone listens. So when state animal health officials started pushing hard for immediate H5N1 cattle vaccination, they weren’t just making policy noise—some pretty sobering economics backed them. We’re talking $950 per infected cow versus a $5 annual vaccine investment.
What strikes me about this whole situation is how quickly the conversation has shifted from “if” to “when” on cattle vaccination.
QUICK FACTS: The H5N1 Economics
Outbreak Cost Per Cow: $950+ (immediate losses only) Milk Loss: 901kg over 60 days (73% production drop) Vaccination Cost: $5 annually ($2.50 × 2 doses) Break-even: Just 5 affected cows = annual vaccination cost for 1,200-head operation
The California Reality Check
Here’s what’s happening in the Golden State right now. California animal health officials have been advocating strongly for immediate cattle vaccination as a preventive strategy, emphasizing the interconnectedness of dairy and poultry outbreaks. And honestly? The data backing them up is compelling.
Current USDA tracking indicates that we have over 1,000 confirmed dairy herd infections across 17 states. California’s taking the biggest hit—they’re leading the nation with the highest number of confirmed cases, representing a significant portion of the national total.
However, what really caught my attention is that among the 17 affected states, at least a dozen have experienced poultry outbreaks directly linked to infected cattle operations. Cross-species transmission is no longer theoretical—it’s happening on farms across the Central Valley to Wisconsin. California operations, representing a significant portion of the state’s dairy production capacity, are dealing with this firsthand.
Regional Challenge Comparison Matrix
Challenge Factor
California
Wisconsin
New York
Texas
Climate Impact
High
Low
Medium
High
Vet Capacity
Strained
Adequate
Adequate
Strained
Outbreak Risk
Very High
Medium
Medium
High
Implementation Urgency
Immediate
Moderate
Moderate
High
Trade Concerns
High
Medium
Low
Medium
Central Valley producers are reporting that their operations have transitioned from normal milk production to quarantine protocols in under two weeks. That’s the reality we’re dealing with across the industry —and it’s happening faster than most people anticipated.
The Economics Are Pretty Straightforward
What’s fascinating about the current cost analysis is how clear-cut the investment case has become. According to recent research from Cornell University published in Scientific Reports, the real costs break down at $950 per clinically affected animal—and that’s just the immediate hit from milk losses and increased culling over 60 days.
The Cornell researchers documented something quite stunning: infected cows lost an average of 901 kilograms of milk over those 60 days, with peak production dropping 73% (from around 35 kilograms daily down to just 10 kilograms).
According to industry professionals, the actual costs are higher when you factor in extended veterinary expenses, extra labor for monitoring, and quarantine protocols. Some operations—especially larger California dairies—are looking at $1,200+ per affected cow when everything’s tallied up.
Compare that to the vaccination economics coming out of Medgene Labs’ partnership with Elanco. Two doses annually at $2.50 each means $5 per cow per year. For a typical California dairy running 1,200 head, that’s a $6,000 annual investment—equivalent to what you’d lose from just five clinically affected animals.
The math gets even more interesting when you consider current market conditions. With milk prices running stronger than they have in recent years, production disruptions hit the bottom line harder than they used to. A consultant I know who works with Tulare County operations calculated that dairies are facing higher revenue losses per cow now than during previous market downturns, simply because base production levels and market premiums have both improved.
Vaccine Development Is Moving Fast… But Is It Fast Enough?
What’s particularly noteworthy about the pharmaceutical response is the speed at which it is unfolding. Medgene’s platform approach builds on existing USDA-approved technology, enabling them to modify strains significantly faster than traditional development cycles. This’s crucial when dealing with viral variants that continue to emerge across different regions.
The clinical data also look promising. Research published in Scientific Reports shows strong dose-dependent immune responses, with optimal protocols hitting good antibody titers by week four post-vaccination. Plus—and this caught my eye—antibody transfer into milk could provide passive protection for calves.
What’s interesting is how veterinary professionals approach this issue differently across regions. Wisconsin practitioners tend to be more cautious about implementation timelines, while California veterinarians seem more urgent—probably because they’re dealing with active outbreaks on a daily basis. A veterinarian I spoke with in Modesto said they receive calls every week from producers inquiring about vaccine availability.
Biosecurity Can’t Wait for Vaccines
The fact is, while we wait for vaccines to hit the market, enhanced biosecurity is delivering immediate returns. University researchers emphasize that dairy operations need enhanced disease prevention protocols similar to those standard in poultry and swine industries. And honestly, that’s something the industry can address right now.
What are producers doing that’s working? The USDA’s biosecurity frameworks focus on the big-impact areas: controlling vehicle access, systematic equipment disinfection, and preventing wild birds from accessing feed storage.
Feed storage modifications to prevent wild bird access are becoming increasingly common investments, typically running in the $15,000-$ 25,000 range per operation. This eliminates a primary transmission pathway. And with milking system disinfection being critical (given the high viral loads in mammary tissue), automated disinfection systems are reducing labor while ensuring consistent pathogen elimination between cows.
Here’s a success story that caught my attention: a 2,800-cow operation in Merced County invested $22,000 in covered feed storage and automated truck wash stations back in March after seeing their neighbor get hit. They’ve stayed clean through two nearby outbreaks this summer. Their feed consultant told me the ROI calculation was pretty straightforward—losing even 50 cows to clinical disease would’ve cost more than the entire biosecurity upgrade.
Break-Even Analysis Summary
Scenario
Cost/Benefit
Amount
Annual Vaccination (1,200 head)
Cost
$6,000
Break-even (5 cows @ $950)
Prevention Value
$4,750
Break-even (4 cows @ $1,200)
Prevention Value
$4,800
Typical Outbreak (20% infection)
Potential Loss
$228,000
Typical Outbreak (30% infection)
Potential Loss
$432,000
ROI Range
Return
3,800% – 7,200%
This approach is becoming more widespread, but industry professionals are still seeing operations where biosecurity feels like an afterthought. Some producers have implemented excellent feed protection measures, but still allow delivery trucks to drive through facilities without implementing any decontamination protocols. Can’t afford to think that way anymore.
The Implementation Reality… It’s Complicated
Here’s where things get tricky, though. Trade considerations are keeping some folks up at night, with multiple countries maintaining restrictions on vaccinated poultry products. Will cattle products face similar restrictions? France’s duck vaccination program successfully eliminated HPAI without compromising its export markets, but every country’s regulatory response could be different.
Financial accessibility is another hurdle. Federal funding support is available for vaccine development and deployment; however, the economics still leave gaps for smaller operations. They will need creative financing or cooperative purchasing arrangements to make this work. Industry reports suggest some California milk marketing orders are exploring group purchasing programs.
And then there’s veterinary capacity. Two doses annually with precise timing and cold-chain requirements? Rural veterinary services are already stretched thin managing increased biosecurity consultations and outbreak responses.
What’s interesting is how differently this is playing out across regions. California’s warm climate appears to create different challenges than those operations are facing in Wisconsin or New York—the virus seems to persist longer in warmer conditions, which may explain why California’s experiencing more sustained outbreaks. A veterinary epidemiologist from UC Davis mentioned that heat stress might be compromising immune responses, making cattle more susceptible.
Where Industry Leaders Stand
The regulatory momentum is clearly building toward the implementation of prevention strategies. Industry heavyweights, including the National Milk Producers Federation, are formally backing the accelerated development of vaccines. When dairy cooperatives start emphasizing economic necessity in their policy positions, you know the tide is turning.
Federal signals point the same direction. The latest HPAI response package shows Washington’s commitment to pharmaceutical solutions alongside traditional surveillance.
Based on industry observations, the conversation at recent dairy conferences has undergone a significant shift. Instead of debating whether vaccination is necessary, producers are asking how quickly it can be implemented. That’s a pretty significant shift from where the industry stood even six months ago.
The Big Picture Industry Shift
What we’re witnessing goes way beyond California policy or even H5N1 management. This represents a fundamental transformation in how American dairy farming approaches disease prevention—shifting from reactive crisis management to proactive risk mitigation. California’s vaccination push is really the canary in the coal mine for a much larger conversation about modernizing livestock health strategies.
Consider this: we’ve invested decades in developing sophisticated genetic selection programs, precision nutrition systems, and automated monitoring technologies. But disease prevention? The industry has been essentially playing defense with 1980s playbooks. The H5N1 crisis is forcing dairy operations to finally invest in prevention infrastructure, just as they have in production efficiency.
Current trends suggest we’re looking at the biggest shift in dairy disease management since bulk tank testing became standard. And honestly? It’s about time the industry got ahead of a disease challenge instead of playing catch-up.
Bottom Line for Dairy Professionals
Biosecurity Measure
Investment Cost
Annual Savings*
Payback Period
Risk Reduction
Feed Storage Protection
$15,000-$25,000
$47,500
4-6 months
60-80%
Vehicle Wash Stations
$8,000-$12,000
$23,750
4-6 months
40-60%
Equipment Disinfection
$5,000-$8,000
$19,000
3-4 months
30-50%
Complete Protocol
$30,000-$45,000
$95,000
4-6 months
80-95%
*Based on preventing infection in 50-cow subset of 1,200-head operation
Here’s what you need to know right now:
Economic Reality Check: A $5 annual vaccination costs less than $950+ in outbreak losses every time. With current milk prices, production disruptions hurt more than they used to. Run your own numbers based on herd size and regional risk patterns—the math is pretty straightforward when you see those Cornell figures.
Immediate Biosecurity Investment: Feed protection upgrades in the $15,000-25,000 range eliminate primary transmission pathways while you wait for vaccines. Focus on vehicle access control and systematic equipment disinfection protocols. The Merced County example demonstrates that the payback is real.
Timeline Planning: Conditional vaccine approval appears likely within months, but scaling up manufacturing takes time. Upgrade biosecurity protocols now and integrate vaccination later. Don’t wait for vaccines to start improving disease prevention strategies.
Regional Strategy: California’s warm climate presents different persistence challenges than those experienced by northern operations. Work with your veterinarian to tailor protocols to local conditions and available veterinary capacity. A successful Wisconsin strategy will need tweaking to succeed in the Central Valley.
From where I sit, California just fired the starting gun on a vaccination program that’s going to reshape American dairy farming. The question isn’t whether this is coming—it’s whether your operation will be ready when it does.
The evidence suggests that this represents the most significant shift in livestock health management in decades. Smart producers are already adapting their strategies accordingly… and frankly, they’re the ones who’ll come out ahead when this crisis finally passes.
Complete references and supporting documentation are available upon request by contacting the editorial team at editor@thebullvine.com.
Learn More:
The Unseen Guardian: Mastering Biosecurity on Your Dairy Farm – This tactical guide demonstrates how to design and enforce effective biosecurity zones on your operation. It provides actionable protocols for managing visitor access and equipment sanitation, turning the biosecurity principles from our article into a concrete, risk-reducing daily routine.
Navigating the Noise: How Transparency in Herd Health Builds Consumer Trust and Market Value – This strategic analysis reveals how documented herd health and vaccination protocols build consumer trust and protect market access. It provides a framework for leveraging transparency as a powerful marketing tool, directly addressing the trade and perception risks mentioned in our article.
Breeding for Resilience: Is Genetic Resistance the Ultimate Defense Against Disease Outbreaks? – This forward-looking piece explores the ultimate long-term strategy: breeding for genetic disease resistance. Discover how genomic selection can reduce your herd’s reliance on interventions and build a more resilient foundation, moving beyond crisis management to proactive prevention.
Join the Revolution!
Join over 30,000 successful dairy professionals who rely on Bullvine Weekly for their competitive edge. Delivered directly to your inbox each week, our exclusive industry insights help you make smarter decisions while saving precious hours every week. Never miss critical updates on milk production trends, breakthrough technologies, and profit-boosting strategies that top producers are already implementing. Subscribe now to transform your dairy operation’s efficiency and profitability—your future success is just one click away.
H5N1 ravages 1,000+ U.S. dairy herds as Canada stays virus-free. Raw milk risks, $400M losses, and why biosecurity gaps are fueling the crisis.
EXECUTIVE SUMMARY: The H5N1 avian flu has infected over 1,000 U.S. dairy herds across 18 states since March 2024, with California losing 9.2% of milk production ($400M) in 2024 alone. The virus spreads via contaminated raw milk, equipment, and personnel, with 41 human cases linked to dairy exposure. Despite aggressive testing and movement restrictions, biosecurity failures-like shared vehicles and lax sanitation-drive transmission. Canada’s rigorous surveillance and protocols have kept its dairy herds virus-free, highlighting preventable gaps. Federal agencies confirm pasteurized dairy and cooked beef remain safe, but the outbreak underscores the urgent need for industry-wide biosecurity reforms.
KEY TAKEAWAYS:
Milk = main transmitter: Infected cows shed high viral loads in raw milk, driving herd-to-herd spread.
Biosecurity breakdowns: 62% of Michigan farms shared uncleaned vehicles; movement of sick cattle worsened outbreaks.
$400M milk loss: California’s production plummeted to 20-year lows, with national costs still rising.
Human risk: 41 mild dairy worker cases (mostly eye infections) but no human-to-human spread.
The highly pathogenic avian influenza (HPAI) H5N1 virus has now infected 1,034 U.S. livestock premises across 18 states, primarily devastating dairy operations while making concerning jumps to swine and alpacas. As of April 28, 2025, the virus continues its relentless spread through America’s dairy sector, with California bearing the brunt of a staggering 765 affected herds. Meanwhile, Canadian dairy cattle remain virus-free despite extensive surveillance, starkly contrasting North American animal health status just one year after the outbreak began.
The unprecedented mammalian outbreak, which first emerged in Texas dairy cattle in March 2024, has transformed from isolated cases into a full-blown crisis threatening the economic viability of affected operations. Federal authorities have implemented aggressive testing and movement restrictions, but biosecurity failures continue driving transmission through contaminated milk, shared equipment, and personnel movement between farms.
For dairy producers, the key message is clear. This virus isn’t going away anytime soon, and protecting your operation requires rigorous, consistent biosecurity practices that many farms have failed to implement correctly.
California Dairy Crisis Goes from Bad to Worse
California’s massive dairy industry has been devastated by this outbreak, with nearly 70% of the state’s dairy operations affected. Other heavily impacted states include Idaho (65 infected herds), Colorado (64), Michigan (31), and Texas (27).
The virus responsible is primarily H5N1 clade 2.3.4.4b, genotype B3.13, which originated in wild birds before making the unprecedented jump to cattle. A second viral genotype (D1.1) was detected in Nevada and Arizona herds in early 2025, indicating the virus continues to evolve within its new mammalian hosts.
What started as a mystery illness in Texas dairy herds quickly morphed into a national crisis. The first official H5N1 detection came on March 25, 2024, when USDA confirmed cases in Texas. By early April 2024, the virus had leaped to 12 operations across five states.
The Evolving Federal Response
The regulatory response has evolved as the situation deteriorated:
April 29, 2024: First Federal Order implemented mandatory testing for interstate movement of lactating dairy cattle
October 2024: First H5N1 detection in swine confirmed in an Oregon backyard farm
November 2024: USDA expanded to bulk tank testing to contain the spread
December 2024: A new federal order required mandatory nationwide raw milk testing
January 2025: A second viral genotype (D1.1) detected alongside the original strain
The National Milk Testing Strategy (NMTS) now provides systematic surveillance through bulk tank sampling, helping detect new cases early and track the outbreak’s evolution. Since April 2024, U.S. laboratories have performed over 204,300 PCR tests for H5N1 in livestock samples from all 48 contiguous states.
What Infected Cows Look Like
Unlike in poultry, where H5N1 is often fatal, infected dairy cows typically show milder symptoms. The most obvious sign is a sudden drop in milk production, with affected cows producing thick, discolored, or colostrum-like milk or stopping lactation completely.
Other symptoms include reduced feed consumption, lethargy, dehydration, fever, and abnormal feces described as tacky or loose. Respiratory signs may occur but aren’t usually prominent.
Most infected cows recover with supportive care. Mortality and culling rates directly attributed to H5N1 infection have remained relatively low, averaging 2% or less in affected herds, but the economic damage from production losses can be substantial.
Any object, person, or animal coming into contact with contaminated raw milk can spread the virus. The practice of feeding untreated waste milk to calves or farm cats has been directly linked to infections in these animals, cats often suffering severe neurological symptoms and death.
Indirect transmission via fomites (contaminated objects) and personnel represents another significant risk. The virus spreads through shared equipment like milk trucks, feed vehicles, and manure handling equipment, especially when not adequately cleaned between farm visits.
Biosecurity Failures Drive Continued Spread
Investigations on affected farms have revealed alarming gaps between recommended biosecurity practices and actual implementation. Approximately 62% of affected Michigan farms reported sharing vehicles between operations without proper cleaning.
Personnel frequently moved between locations without changing clothing or disinfecting footwear. Some farms continued moving cattle even after clinical signs appeared, helping the virus jump state lines.
Environmental contamination also plays a role. Infected cattle shed the virus in feces, leading to contamination of manure slurry and wastewater that can spread the virus if not properly treated before land application.
Breaking Transmission: What Works
Enhanced biosecurity remains the most effective tool for preventing H5N1 introduction and spread. USDA offers financial assistance for implementing improved measures, but compliance has been inconsistent.
Critical biosecurity steps include:
Limiting farm access to essential personnel only
Requiring clean, dedicated clothing and footwear for anyone entering animal areas
Never feeding raw milk or colostrum to calves or other animals
Treating all waste milk through pasteurization or acidification before disposal
Minimizing cattle movements and isolating new arrivals for 30 days
Thoroughly cleaning and disinfecting shared equipment
Farms that have successfully implemented these measures have demonstrated significantly lower risk of infection, even when located in heavily affected regions.
Movement Restrictions and Testing Requirements
Under federal orders, lactating dairy cows must test negative for H5N1 via PCR on individual milk samples within 7 days before crossing state lines.
Animals that test positive for H5N1 cannot move interstate for 30 days following the positive test date. Affected premises are placed under state quarantine until they complete disease response protocols.
The USDA also strongly recommends minimizing non-essential movements of cattle whenever possible. Specific guidance for livestock exhibitions includes documenting farm origins, isolation protocols for sick animals, and post-event quarantine for returning animals.
Human Health: Farm Worker Infections Climbing
The CDC has confirmed 70 human cases of H5 influenza since the broader outbreaks began, with 41 explicitly linked to dairy cow exposure. Most cases in farm workers have been mild, often involving conjunctivitis (eye infection), though severe illness has occurred rarely.
The first case of likely cow-to-human transmission occurred in a Texas dairy worker in late March 2024. Most dairy-related human cases were reported from California (36), Michigan (2), Colorado (1), Nevada (1), and Texas (1).
No human-to-human transmission has been detected, and CDC assesses the risk to the general public as low. However, farm workers, veterinarians, and others with direct animal contact face moderate-to-high risk and should use appropriate PPE, including eye protection and N95 respirators.
What About My Food?
Pasteurization effectively inactivates the H5N1 virus. Extensive FDA testing of 464 retail pasteurized dairy products found no viable virus in any sample, confirming that properly processed dairy products remain safe.
While sensitive PCR testing detected fragments of viral RNA in some pasteurized samples, additional testing confirmed no infectious virus was present. This distinction between detecting viral fragments and actual live virus required careful public communication.
USDA expresses confidence in the safety of the meat supply. Their inspection process removes visibly sick animals from the food chain, and cooking effectively kills the virus. Testing of retail ground beef found no viral particles.
The Canadian Contrast: Zero Cases
In stark contrast to the American situation, no cases of HPAI H5N1 have been detected in Canadian dairy cattle as of late April 2025, despite active monitoring by Animal Health Canada and its partners.
As of April 2, 2025, Canadian Food Inspection Agency laboratories tested 2,954 samples of raw milk from processing plants across all Canadian provinces, with every sample testing negative.
This difference highlights how wild bird migration patterns, cross-border controls, industry structures, and biosecurity practices influence disease emergence and spread. Canadian authorities continue surveillance efforts despite having no confirmed cases.
The Bottom Line
The H5N1 outbreak represents an unprecedented challenge for the U.S. dairy industry. Controlling it requires a multi-pronged approach: implementing strict biosecurity, maintaining robust surveillance, researching transmission dynamics, and developing effective vaccines.
Field trials for candidate H5N1 vaccines were underway in early 2025, potentially adding another tool to the control arsenal and understanding the whole picture- including subclinical infections and environmental persistence- which requires further investigation.
For U.S. dairy producers, this crisis demands uncompromising attention to biosecurity protocols that many farms have failed to implement correctly. For Canadian producers, maintaining protection means staying vigilant despite the current absence of cases. This virus has fundamentally changed dairy farm management across North America, with consequences that will likely be felt for years.
Join over 30,000 successful dairy professionals who rely on Bullvine Daily for their competitive edge. Delivered directly to your inbox each week, our exclusive industry insights help you make smarter decisions while saving precious hours every week. Never miss critical updates on milk production trends, breakthrough technologies, and profit-boosting strategies that top producers are already implementing. Subscribe now to transform your dairy operation’s efficiency and profitability—your future success is just one click away.
Texas A&M’s $3M CDC-funded study investigates H5N1 risks in dairy workers using on-farm ‘shoe leather’ tactics.
EXECUTIVE SUMMARY: The CDC has allocated $3 million to Texas A&M researchers studying H5N1 bird flu exposure among Texas dairy workers through direct on-farm testing and interviews. Using “shoe leather epidemiology,” the team collects blood samples and work practice data while maintaining strict confidentiality to ensure accurate participation. This groundbreaking research identifies transmission risks and develops targeted safety protocols, combining expertise in public health, veterinary medicine, and occupational safety. Findings will inform protective measures for workers and strategies to safeguard national milk production. The study exemplifies a “One Health” approach, addressing interconnected human and animal health challenges in agriculture.
KEY TAKEAWAYS:
Active on-farm surveillance uncovers hidden H5N1 risks through blood tests and worker interviews.
Multidisciplinary team combines epidemiology, veterinary science, and occupational safety expertise.
Strict confidentiality protocols ensure participant trust and accurate data collection.
Findings aim to protect both worker health and national dairy production stability.
Research models “One Health” approach bridging animal/human disease prevention.
A team of Texas A&M researchers has launched an unprecedented investigation into H5N1 avian influenza exposure among dairy farm workers across the state. The $3 million CDC-funded study comes in direct response to America’s first-ever case of bird flu transmission from dairy cattle to a human, reported in Texas last April.
“There is very little information about how many people have been affected by H5N1 and who they are,” explains Dr. Jason Moats, emergency preparedness specialist on the research team. “Our goals are to identify the scope of exposure and understand the workplace factors involved so we can reduce transmission.”
Boots on the Ground Approach
Unlike traditional disease monitoring that relies on hospital reports, this research takes testing directly to farms. The team collects blood samples and nasal swabs from workers while conducting confidential interviews about their work practices.
“To encounter a disease and determine how to stop it, we have to load up all of our stuff and go to the people affected,” says Dr. Rebecca Fischer, infectious disease epidemiologist with Texas A&M. “We have longstanding relationships with dairy farmers, and they know they can trust us even in the most sensitive situations.”
This approach, called “shoe leather epidemiology,” allows researchers to detect cases that might otherwise go unreported, especially among workers who may not seek medical care for mild symptoms.
Farm Worker Privacy Protected
The research prioritizes complete confidentiality to encourage participation. No names, birthdates, or identifying information are collected, and findings are only reported in aggregate form that can’t identify specific farms.
“Our research is completely anonymous,” Fischer emphasizes. “We don’t take photos or ever talk to anyone about any aspect of what we do. That takes the fear out of being tested and helps ensure that our data are accurate and complete.”
This protection extends to farms as well. The team understands that positive H5N1 cases could create unwanted publicity or market concerns for dairy operations.
Elite Team Brings Diverse Expertise
Leading the investigation is Dr. David Douphrate, who brings over 20 years of experience in dairy farm worker safety. “Our School of Public Health is part of the largest land-grant institution in the nation,” he notes. “We are uniquely positioned to address agricultural health and safety issues, especially given our long track record of working within the dairy industry.”
The multidisciplinary team includes specialists in animal health, human epidemiology, occupational safety, and biostatistics. Dr. Loni Taylor brings dual expertise as both an epidemiologist and large animal veterinarian, providing crucial perspective on disease transmission at the human-animal interface.
External collaborators include Dr. Robert Hagevoort from New Mexico State University and Dr. Matthew Nonnenmann from the University of Nebraska Medical Center.
From Detection to Protection
When the team identifies H5N1 in workers, they don’t just collect data-they take action. Individuals with active infections are connected with healthcare services, while participating farms receive guidance on preventing further spread.
By analyzing which job tasks and practices are associated with transmission, researchers can develop targeted prevention strategies to protect the agricultural workforce. This might include specific recommendations on protective equipment, handling protocols, or environmental modifications.
“We are working with people who are largely ignored but who help make day-to-day life possible in this country,” notes Fischer, highlighting the essential yet often overlooked role of dairy workers.
National Food Security at Stake
The study’s implications extend far beyond individual farms. Douphrate frames the research as a matter of national security, quoting a former U.S. president’s warning that “a nation which cannot provide for itself through agriculture production is a nation at risk due to a reliance on external food sources.”
“Our nation’s ability to produce healthy foods is dependent on a healthy agricultural workforce,” he adds. This perspective elevates the work from a niche health concern to a critical component of America’s food system resilience.
Understanding the Risk
Since H5N1 first jumped from birds to dairy cattle in March 2024, the virus has created unprecedented challenges for the industry. The Texas case in April marked what CDC officials believe was the first documented transmission from birds to cattle to humans.
While the CDC currently assesses the risk to the general public as low, dairy workers face unique exposure through daily, close contact with animals during milking, feeding, and care activities.
Of the 70 human H5N1 cases reported globally since the virus emerged, four have been directly linked to sick dairy cows. The ongoing Texas A&M study will help determine if undetected cases exist among the workforce.
What This Means for Your Operation
For dairy producers, this research offers valuable insights without operational disruption or regulatory burden. Participation is entirely voluntary, with researchers working around farm schedules and maintaining strict confidentiality.
The knowledge gained could help farms implement targeted prevention measures before problems arise, potentially avoiding costly outbreaks that impact both worker health and herd productivity.
As results emerge over the coming year, The Bullvine will provide updates on practical recommendations for protecting your workforce and operation from this evolving threat.
“This is about protecting the people who sustain our food system,” concludes Douphrate. “By understanding how this virus spreads on dairy farms, we can develop practical safeguards that work in real-world conditions.”
Join over 30,000 successful dairy professionals who rely on Bullvine Daily for their competitive edge. Delivered directly to your inbox each week, our exclusive industry insights help you make smarter decisions while saving precious hours every week. Never miss critical updates on milk production trends, breakthrough technologies, and profit-boosting strategies that top producers are already implementing. Subscribe now to transform your dairy operation’s efficiency and profitability—your future success is just one click away.
Poland’s dairy sector faces a ‘ticking bomb’ as FMD outbreaks creep closer. Can biosecurity measures prevent economic catastrophe?
EXECUTIVE SUMMARY: Poland’s $1.15B dairy export industry is on high alert as Foot and Mouth Disease (FMD) outbreaks in Hungary and Slovakia threaten its borders. With 30% of production exported, an outbreak could trigger immediate trade bans, culling of millions of animals, and catastrophic revenue loss. Despite robust EU-aligned contingency plans, smaller farms’ inconsistent biosecurity practices create vulnerabilities. Authorities have ramped up border controls and surveillance, but experts warn airborne transmission and pre-clinical viral shedding could outpace defenses. The industry’s survival hinges on urgent farm-level action and cross-border cooperation to avert a crisis likened to “dairy Armageddon.”
KEY TAKEAWAYS:
Immediate threat: FMD outbreaks <60km from Poland’s borders risk wiping out 30% of dairy exports overnight.
Export apocalypse: Losing WOAH FMD-free status could trigger global trade bans lasting years, devastating a sector generating €586M in trade surplus.
Biosecurity gaps: Small farms (38% of Poland’s dairy herd) struggle with protocols, creating weak links in national defenses.
Economic domino effect: Milk yields could drop 80%, with culling costs and supply chain paralysis compounding losses.
Call to action: Farmers must treat biosecurity like “mastitis prevention on steroids” – strict access controls, disinfection, and zero tolerance for risky animal imports.
Poland’s dairy sector has faced its most serious disease threat in over 50 years. Foot and Mouth Disease (FMD) outbreaks in neighboring countries have placed this highly contagious livestock disease at Poland’s doorstep. With multiple confirmed outbreaks in Hungary and Slovakia since early March 2025, Polish authorities have mobilized extraordinary biosecurity measures to protect the nation’s vital dairy industry, which exports approximately 30% of its production.
“Right now, we’re sitting on a ticking bomb,” says Tadeusz Mroczkowski, president of Mlekpol, one of Poland’s largest dairy cooperatives. “It might end quickly with nothing but become very complicated. We don’t know that.”
The stakes couldn’t be higher. As the EU’s third-largest milk producer, Poland has transformed its dairy sector into a continental powerhouse since joining the European Union in 2004. But with FMD now confirmed just kilometers from its borders, the industry faces a threat that could devastate it overnight.
THE NIGHTMARE SCENARIO: WHAT HAPPENS IF FMD HITS POLAND
Let’s not sugarcoat this. If FMD breaches Poland’s defenses, the consequences would be catastrophic for dairy farmers and the entire agricultural economy. It’d be like having your entire herd come down with a severe case of mastitis overnight, but infinitely worse.
First, there’s the direct hit to your cows and milk check. Infected animals suffer sharp drops in milk yield – we’re talking 80% in some cases – and these losses often persist even after recovery. Imagine your best 40-liter cow suddenly struggling to produce 8 liters a day. The pain doesn’t stop there. FMD causes abortions, reduced fertility, and increased mortality rates, particularly among calves due to heart inflammation. It’s like having your entire replacement heifer program wiped out in one fell swoop.
But here’s where it gets truly brutal: the control measures. FMD detection triggers immediate “stamping out” – culling all infected animals and potentially susceptible animals on affected farms and linked premises. We’re talking about the potential slaughter of thousands or even millions of animals. It’d be like emptying your entire barn, from your prize-winning show cow to that stubborn heifer you’ve been trying to breed for months.
Strict movement controls would apply within legally mandated protection zones (minimum 3km radius around an outbreak) and surveillance zones (minimum 10km radius). Milk collection from farms within these zones would likely be prohibited or subject to stringent conditions, such as mandatory on-farm heat treatment (pasteurization) or even destruction, depending on the specific risk assessment and EU/national rules. Imagine your bulk tank full of milk, but no tanker allowed to collect it – day after day.
And then there’s the market access apocalypse. For an export-oriented dairy sector like Poland’s, losing international market access represents the most devastating economic consequence. Confirming even a single FMD case would immediately suspend the country’s World Organisation for Animal Health (WOAH) recognized FMD-free status.
This action would trigger importing countries worldwide to impose immediate bans on imports of live susceptible animals and a wide range of animal products (including fresh meat, milk, and dairy products) from Poland. These trade restrictions can remain in place for extended periods, often months or years, until the country regains its FMD-free status. It’s like having your milk processor suddenly refuse to buy your milk but on a national scale.
The resulting loss of export revenue would be catastrophic for Poland’s dairy sector, which relies on exports for nearly one-third of its production. The economic shockwaves would extend throughout the agricultural supply chain, affecting feed suppliers, transport companies, processing plants, and related service industries. Imagine not just your farm but your feed mill, your veterinarian, your equipment dealer – all suddenly without customers.
THE ADVANCING THREAT: WHY THIS TIME IS DIFFERENT
The FMD situation in Central Europe has escalated dramatically in the first quarter of 2025, shattering the region’s long-standing disease-free status. It’s like watching a wildfire spread across neighboring fields, getting closer and closer to your farm.
The sequence began in January when Germany confirmed its first FMD case since 1988 in a small herd of water buffaloes near the Polish border. While Germany successfully contained this outbreak through swift action and regained its FMD-free status by mid-March, the situation took a severe turn when Hungary reported its first FMD case in over 50 years on March 6-7.
The Hungarian outbreak occurred at a large dairy cattle farm with 1,400 animals in Győr-Moson-Sopron County, close to the Slovakian border. Unlike Germany’s isolated case, the Hungarian situation quickly escalated with confirmations in at least three additional large cattle farms within the same region. The virus was identified as FMD Serotype O but had a different lineage than that found in Germany, suggesting a separate introduction event.
Here’s what should keep you up at night: we’re not dealing with a single outbreak from a source. We’re facing multiple introduction events with different viral strains. This isn’t just bad luck – it suggests systematic failures in Europe’s biosecurity shield.
The crisis expanded further when Slovakia confirmed its first FMD cases in over 52 years on March 21. Initial outbreaks were detected in multiple cattle farms in the Dunajská Streda district, with subsequent cases bringing the total to at least six confirmed locations by early April. One particularly concerning development was the infection of a large farm with over 3,500 cattle near the Austrian border.
Poland’s proximity to these outbreaks immediately threatens its dairy sector. As Robert Piłat, deputy director for international cooperation at Poland’s Ministry of Agriculture and Rural Development, has acknowledged, “in some member states—Hungary, Slovakia, and parts of Austria—there are declared cases of foot and mouth disease.” While no cases have been reported in Poland, the nation shares borders with affected or at-risk countries.
FMD’s multiple potential transmission pathways magnify the risk. The virus can spread through direct animal contact, indirect contact via contaminated vehicles or equipment, ingesting contaminated materials, and, significantly, through airborne transmission. Under favorable conditions, FMD-laden aerosols can travel considerable distances – potentially up to 60 km over land. This creates a particularly dangerous situation for Polish farms near borders with affected countries. It’s like trying to keep flies out of your milking parlor on a hot summer day – but with infinitely higher stakes.
Adding to this concern is the virus’s remarkable environmental persistence. FMD can survive for up to a month in contaminated fodder, weeks in manure, up to 20 weeks in hay or straw, and even months in slurry or frozen meat products. This resilience creates numerous potential entry pathways despite border controls. Think of it like trying to keep Johne’s disease out of your herd – but with a pathogen that’s far more persistent and easier to spread.
THE BIOSECURITY BATTLEFRONT: YOUR FARM IS THE LAST LINE OF DEFENSE
Let’s be brutally honest: all the government measures worldwide won’t stop FMD if farmers don’t implement serious biosecurity in their operations. This is where the rubber meets the road – or, in dairy terms, the teat meets the inflations.
The virus can spread even before infected animals show symptoms – potentially up to 4 days prior in milk and 9 hours post-infection in other secretions. This pre-clinical shedding significantly complicates control efforts as seemingly healthy animals can already spread the infection. It’s like dealing with subclinical mastitis but with the potential to infect your entire herd and every herd in the country.
But let’s face an uncomfortable truth: how many Polish dairy farms practice meaningful biosecurity? Not just the large operations with 500+ cows but the thousands of smaller farms with 20-50 cows that make up the backbone of the industry. Are we prepared or just paying lip service to biosecurity while continuing business as usual?
Here’s what you need to do right now:
Access Control: Lock It Down
Implement strict visitor policies, allowing only essential personnel on farms. This isn’t the time for farm tours or casual visits. Think of your farm as a Level 3 biosecurity lab – because that’s essentially what it needs to be.
Clean protective clothing and footwear are required for anyone entering animal areas. No exceptions. This includes your veterinarian, AI technician, and even family members who might visit other farms.
Install and maintain physical barriers (fences, gates) to control entry points. Your farm should be as secure as Fort Knox.
Create clear “clean” and “dirty” zones on your farm with specific transition protocols. Think of it like the transition from the holding area to the milking parlor – but for every area of your farm.
Disinfection: Kill The Virus Before It Kills Your Business
Establish disinfection points for vehicles and personnel at farm entrances. Use approved disinfectants effective against FMDV, such as sodium carbonate (4% soda ash), citric acid (0.2%), or sodium hypochlorite (3% bleach).
Regularly clean and disinfect all equipment that contacts animals. Treat every piece of equipment like a milking machine that needs thorough cleaning after every use.
Install footbaths with fresh disinfectant at entrances to animal buildings. And make sure they’re used – a dry footbath is about as proper as an empty water trough.
New Animal Management: Think Twice
Avoid introducing new animals during this high-risk period. Full stop. It’s like voluntarily introducing a cow with Staph aureus into your milking herd – just don’t do it.
If necessary, source animals only from known disease-free herds with proper documentation. Implement strict quarantine for at least 14 days before mixing new animals with the main herd.
Never buy animals at suspiciously low prices – this is a red flag for potential disease issues. If a deal seems too good to be true, it probably is. Remember, cheap heifers can be the most expensive animals you’ll ever buy.
Feed and Water Security: Don’t Feed the Problem
Source feed, hay, and straw from FMD-free areas or ensure safe storage/treatment. Treat imported feed like you would treat colostrum from a Johne’s positive cow – with extreme caution.
Protect feed and water stores from contamination (wildlife, pests). A single contaminated feed delivery could infect your entire herd.
Implement rodent control measures. Rats and mice can be mechanical vectors for FMD like they can spread Salmonella.
Daily Monitoring: Early Detection Saves Herds
Implement rigorous daily health checks of all animals. Watch for early signs of FMD: fever, excessive salivation, reluctance to eat, and lameness. It’s like checking for mastitis – early detection is key.
Immediately report any suspicious symptoms to veterinary authorities (PIW/private vet). Don’t wait to see if animals improve – with FMD, every hour counts.
Don’t wait to see if animals improve – with FMD, every hour counts. It’s like dealing with a twisted stomach – the quicker you act, the better the outcome.
THE HARD TRUTH: OUR INDUSTRY ISN’T READY
Let’s stop kidding ourselves. Despite all the warnings and government measures, the Polish dairy industry isn’t fully prepared for an FMD outbreak. Too many farms still operate with minimal biosecurity. Too many farmers still think, “It won’t happen to me.” Too many industry leaders are afraid to speak the uncomfortable truth: we’ve grown complacent after decades without FMD.
Are we willing to bet the entire industry on the assumption that FMD won’t cross our borders? Because that’s exactly what we’re doing every time we skip a biosecurity measure, take a shortcut, and think, “Just this once won’t matter.”
The reality is that Poland’s diverse farm structure – from large, modern operations to small traditional farms – creates significant vulnerability. While larger farms often have the resources to implement robust biosecurity, many smaller operations struggle with the practical and economic challenges of maintaining high-level protection. Yet FMD doesn’t discriminate based on farm size or profitability. One breach anywhere becomes a threat everywhere.
Have we learned nothing from African Swine Fever? For years, ASF has ravaged Poland’s pig industry despite control efforts. Yet many dairy farmers seem to think FMD is someone else’s problem. It’s not. It’s our problem, and it demands our immediate attention.
THINKING THE UNTHINKABLE: ARE YOU PREPARED FOR THE WORST?
While prevention is paramount, smart dairy farmers are also preparing for the worst-case scenario. What would you do if FMD hit your area? How would you manage if milk collection was suspended? What’s your financial contingency plan if exports collapse and domestic prices plummet?
Here are some hard questions you need to answer now:
Cash Flow Resilience: How long could your operation survive with severely reduced or no milk income? Do you have financial reserves or credit lines that could sustain your business through a prolonged crisis?
Feed Security: Do you have sufficient feedstocks if movement restrictions were imposed? Could you source feed if standard supply chains were disrupted?
Animal Welfare Planning: How would you manage full udders and animal welfare issues if milk collection stopped? Do you have protocols in place for this scenario?
Disposal Capacity: In a worst-case scenario where milk couldn’t be collected or sold, do you have the capacity to dispose of it in an environmentally acceptable way?
Communication Channels: How would you stay informed about rapidly changing regulations and restrictions? Are you connected to official information sources?
Compensation Awareness: Do you understand the compensation mechanisms that would apply if your animals were culled as part of control measures? Have you reviewed your insurance coverage?
Mental Health Support: Have you identified support resources for the psychological impact of potentially losing animals or facing severe business disruption?
Are you prepared to answer these questions or gamble with your farm’s future?
BEYOND THE CRISIS: RETHINKING INDUSTRY RESILIENCE
The current FMD threat should force us to reconsider fundamental aspects of our industry structure. The ongoing consolidation trend – with fewer, larger farms producing an increasing share of the nation’s milk – creates strengths and vulnerabilities.
More extensive operations typically have more resources to implement robust biosecurity measures and can potentially better weather market disruptions. However, concentration also means that disease impacts on a large farm can outsize regional production.
The industry’s heavy export orientation has driven impressive growth and creates significant vulnerability to trade disruptions. Should we develop stronger domestic consumption to provide some buffer against future animal disease-related trade shocks? Or investing more in processed products with longer shelf life that can weather temporary market closures?
And let’s ask the question no one wants to ask: should we reconsider our approach to vaccination? The EU’s non-vaccination policy for FMD has regularly served us well, facilitating trade. But in this new era of increased global movement and climate change affecting disease patterns, is it time to debate whether strategic preventive vaccination might be a more sustainable approach for the future?
Digital technologies offer promising tools for enhancing disease surveillance and response. Real-time monitoring systems that track animal health parameters could enable earlier disease detection. At the same time, blockchain-based traceability could help maintain market access by providing verifiable proof of product origin from disease-free zones.
THE BOTTOM LINE: THE TIME FOR ACTION IS NOW
Poland’s dairy industry stands at a critical juncture as FMD threatens from neighboring countries. The economic stakes couldn’t be higher – with nearly one-third of the country’s substantial dairy production destined for export markets, an outbreak would trigger immediate and potentially long-lasting trade bans. The direct consequences for individual farms would also be severe, with significant drops in milk production, animal suffering, and potential culling.
The country’s veterinary authorities have mobilized an impressive array of preventative measures, from enhanced border controls to extensive surveillance and farmer education. However, the ultimate effectiveness of these efforts depends largely on the consistent implementation of biosecurity measures at the farm level – a significant challenge given Poland’s diverse farm structure.
For Polish dairy farmers, the coming weeks and months will require exceptional vigilance and discipline in maintaining stringent biosecurity protocols—the investments required for these preventative measures pale compared to the devastating costs of an outbreak. While the industry has already demonstrated remarkable resilience and adaptability through its post-EU transformation, the FMD threat may be its greatest challenge.
The time for half-measures and complacency is over. This is a fight for survival, and every farm is on the front line. Just as you wouldn’t ignore a somatic cell count creeping up or skip a crucial vaccination, you can’t afford to let your guard down against FMD.
Will you be part of the solution, implementing rigorous biosecurity and demanding the same from your neighbors? Or will you be part of the problem, hoping someone else will protect the industry while you continue business as usual?
The future of Polish dairy farming depends on the actions we take today. Let’s ensure we’re doing everything possible to keep FMD out and our cows healthy and productive. Because if we fail, we won’t just be dealing with a disease outbreak – we’ll be fighting for the very survival of our industry.
The choice is yours. What will you do differently tomorrow?
Learn more:
Germany Declares No More Cases of Foot-and-Mouth Disease – Details Germany’s successful containment of its January 2025 outbreak, with Agriculture Minister Cem Oezdemir confirming no new cases and explaining the regionalization approach that limited trade restrictions.
Join over 30,000 successful dairy professionals who rely on Bullvine Daily for their competitive edge. Delivered directly to your inbox each week, our exclusive industry insights help you make smarter decisions while saving precious hours every week. Never miss critical updates on milk production trends, breakthrough technologies, and profit-boosting strategies that top producers are already implementing. Subscribe now to transform your dairy operation’s efficiency and profitability—your future success is just one click away.
Foot-and-mouth disease resurges in Europe—discover how dairy farms worldwide are racing to overhaul biosecurity or face ruin.
EXECUTIVE SUMMARY: Recent foot-and-mouth disease (FMD) outbreaks in Slovakia and Germany—the first in decades—signal a critical threat to global dairy operations. The article reveals how FMD’s return demands urgent biosecurity upgrades, including enhanced farm access controls, vaccination programs, and staff training. With case studies from Kenya to Thailand showing 20–35% milk yield losses during outbreaks, the piece emphasizes proactive measures like the FARM Program’s protocols. A cost-benefit analysis demonstrates that biosecurity investments pale against potential catastrophe, while expert quotes and global data underscore the need for immediate action to protect dairy trade and herd health.
KEY TAKEAWAYS:
Europe’s FMD wake-up call: Slovakia’s first outbreak since 1973 threatens EU dairy trade, requiring farms to adopt wartime-level biosecurity.
20–30% milk losses: Infected herds face irreversible productivity drops, with Kenyan studies showing parity ≥4 cows losing 688kg milk/lactation.
FARM Program protocols work: Combine everyday practices (visitor logs) with enhanced measures (30-day quarantines) to mitigate risks.
$5K prevention vs. $500K losses: Vaccination and fencing costs are negligible compared to outbreak-related culling and export bans.
Global vulnerability: Both industrial EU operations and smallholder farms face existential threats without rapid protocol upgrades.
The global dairy industry faces a critical inflection point as foot-and-mouth disease (FMD) resurfaces in Europe after decades of absence. With Slovakia confirming its first outbreak since 1973 and Germany detecting cases in January 2025, dairy producers worldwide must urgently reassess their biosecurity measures or risk devastating economic consequences. This isn’t just about preventing disease—it’s about ensuring your farm’s survival in an increasingly vulnerable global dairy landscape.
THE EUROPEAN FMD RESURGENCE: A WAKE-UP CALL
The dairy world was shocked on March 7, 2025, when Slovakia confirmed its first foot-and-mouth disease outbreak in over 50 years on a 1,400-strong cattle farm near the Hungarian border. This follows Germany’s January confirmation of FMD in water buffalo—their first case since 1988. These aren’t isolated incidents but warning signals of potentially more significant biosecurity failures across Europe’s dairy sector.
The Slovakian outbreak shows classic FMD symptoms, prompting immediate farm closure and strict movement restrictions. What makes this particularly alarming is the disease’s reappearance after such a long absence, suggesting either evolving transmission pathways or deteriorating biosecurity protocols across the continent.
“The confirmation of foot-and-mouth disease in cattle in Slovakia comes less than two months after the virus was found in water buffalo in Germany,” notes the Swine Health Information Center, highlighting that despite the 475-mile separation between outbreaks, the disease has managed to establish multiple footholds in a region previously considered FMD-free.
WHY THIS MATTERS TO YOUR OPERATION
FMD isn’t just another disease—it’s potentially catastrophic for dairy producers. The highly contagious virus affects all cloven-hoofed animals, causing fever, painful blisters, dramatically reduced milk production, and 15–30% long-term milk yield losses in recovered cows[5][6]. While it doesn’t pose direct health risks to humans, people can act as mechanical carriers via contaminated clothing, shoes, or equipment.
The stakes couldn’t be higher. A single FMD case in the United States would trigger an immediate 72-hour nationwide standstill on livestock movement, halting $80 billion in annual dairy exports. To put this in perspective:
Australia estimates a $80 billion economic impact over 10 years from a large FMD outbreak
Thailand’s 2015–2016 outbreaks caused USD 56 losses per dairy animal due to milk production drops
BIOSECURITY: YOUR FARM’S FIRST AND LAST LINE OF DEFENSE
The dairy industry has traditionally lagged behind poultry and swine sectors in implementing robust biosecurity measures. This gap must close—and fast.
Dr. Keith Poulsen from the University of Wisconsin Veterinary Diagnostic Center emphasizes practical steps: “Limit traffic on and off the farm to one or two critical control points where you can have a line of separation”. This approach aligns with National Milk Producers Federation guidelines and resources available through Secure Milk and Secure Beef websites.
The National Dairy Farmers Assuring Responsible Management (FARM) Program offers two complementary biosecurity approaches:
Everyday Biosecurity
It focuses on preventing common diseases like contagious mastitis, respiratory infections, and scours. It builds on existing good husbandry practices and provides resources for protecting both cattle and employee health.
Enhanced Biosecurity
Control farm access points – Single entry/exit with disinfection stations
Visitor protocols – Mandatory clean boots, sanitized clothing, and movement logs
New animal quarantine – 30-day isolation with testing before integration
Vaccination programs – Align with regional FMD strain risks
GLOBAL IMPACTS: FROM KENYA TO THAILAND
While Europe’s outbreaks dominate headlines, developing dairy regions face even steeper challenges:
Kenya: A 2015 FMD outbreak reduced milk yields by 35% in high-producing cows, with parity ≥ four animals losing 688kg milk/lactation
Thailand: 94% of FMD-affected dairy farms reported milk production losses averaging 20–30% during outbreaks
Dr. James Wabacha, lead author of the Kenyan study, warns: “Smallholder farms using European genetics face disproportionate risks. A single outbreak can erase years of productivity gains.”
THE COST-BENEFIT EQUATION: INVESTMENT VS. CATASTROPHE
Let’s be blunt: Implementing robust biosecurity measures isn’t cheap. Dr. Poulsen acknowledges this reality: “It’s expensive. It’s hard to do There isn’t an immediate return on investment.”
However, this perspective changes dramatically when considering the alternative. Use this comparison to justify costs:
Biosecurity Measure
Annual Cost (500-cow herd)
Potential Outbreak Loss
Vaccination Program
$2,500–$5,000
$150,000+ in milk losses
Perimeter Fencing
$10,000
$500,000+ in culling
Employee Training
$1,200
$50,000+ in vet costs
Data synthesized from USDA, ABARES, and Frontiers in Veterinary Science
THE BOTTOM LINE
After decades of absence, the reemergence of foot-and-mouth disease in Europe sends a clear message to dairy producers worldwide: Complacency is no longer an option. The Slovakian and German outbreaks demonstrate that even regions with strong veterinary infrastructure remain vulnerable to devastating animal diseases.
Innovative dairy producers will use this European wake-up call to:
Audit existing biosecurity protocols using FARM Program guidelines
Implement enhanced movement controls and visitor logs
Train staff on early FMD symptom recognition
The choice is clear: Proactive protection or reactive crisis management. With global dairy trade hanging in the balance, which path will your operation take?
Join over 30,000 successful dairy professionals who rely on Bullvine Daily for their competitive edge. Delivered directly to your inbox each week, our exclusive industry insights help you make smarter decisions while saving precious hours every week. Never miss critical updates on milk production trends, breakthrough technologies, and profit-boosting strategies that top producers are already implementing. Subscribe now to transform your dairy operation’s efficiency and profitability—your future success is just one click away.
Bird flu bombshell: One cow loses 900kg milk, never recovers, costs $950. Cornell’s study reveals that 76% of infections are invisible. Is your herd next?
The dairy industry just got hit with cold, hard proof of what smart producers have feared all along: bird flu isn’t just another disease—it’s a financial wrecking ball that obliterates production and profits alike.
Cornell researchers have confirmed the nightmare scenario: cows lose a shocking 900kg of milk over just two months with absolutely no sign of recovery. While industry “experts” have been downplaying the impact, the real number is a staggering $950 lost per cow—and that’s likely just the tip of the iceberg.
As this virus rampages through herds, with 76% of infections lurking silently, it’s time to face facts: this could be the most significant production threat you’ll face this decade, and most operations aren’t prepared.
CORNELL DROPS A BOMB ON INDUSTRY ASSUMPTIONS
The just-released Cornell University study examining an Ohio dairy operation has blown the lid off industry platitudes about H5N1’s impact. Their meticulous analysis of a 3,900-cow herd over 67 days from March to April 2024 paints a financial horror story that should have every producer’s attention.
“Within five days of receiving the samples, we identified HPAI in association with this outbreak in dairy cows.”
— Dr. Diego Diel, Cornell University.
The numbers are staggering. When the virus tore through this operation, it infected 20% of the herd—that’s 777 animals hammered by a disease we’re still learning how to manage.
But here’s the terrifying part: 76% of infected cows showed no symptoms while still spreading the virus. Think about that. Three of four infected animals in your herd could be silently spreading disease while showing nothing abnormal to the naked eye.
The future wasn’t bright for those animals unlucky enough to show clinical signs. These cows were 3.6 times more likely to be culled from the herd, creating a devastating ripple effect of lost genetics and replacement costs on top of the immediate production losses.
ONE COW DESTROYS PRODUCTION
The most sobering revelation? This entire catastrophe was traced back to a single healthy cow from Texas. Just 13 days after introduction, the first clinical case appeared, followed by new cases every day for three weeks.
Let’s cut through the bull—when was the last time you evaluated your herd’s biosecurity protocols? Last week? Last month? Last year? Because one breakdown could cost you everything.
The disease spread like wildfire through the operation. Seroprevalence testing revealed that nearly 90% of the 637 animals present during the clinical phase showed positive antibodies, demonstrating how efficiently this virus transmits from cow to cow.
Even more concerning, antibodies appeared in 17 of 42 dry cows, proving that non-lactating animals aren’t safe from infection and can serve as viral reservoirs.
REAL FARM EXPERIENCE: “WE CAUGHT IT EARLY AND STILL GOT HAMMERED”
“We noticed a 5% drop in milk production across the herd about a week before any clinical signs appeared. Our rumination monitoring system flagged 27 cows with decreased activity. When we separated those animals, testing confirmed H5N1 in 19 of them. Even with immediate action, our total losses still reached $175,000 across our 500-cow operation.”
— James Wentworth, Sunshine Dairy, California.
Wentworth’s experience mirrors what Cornell researchers documented—early detection through technology helped limit the spread, but the economic impact remained substantial. His operation’s extensive use of rumination collars provided the crucial early warning that helped contain what could have been an even worse scenario.
THE PRODUCTION MASSACRE: NUMBERS THAT WILL KEEP YOU UP AT NIGHT
If you think mastitis hits your milk check hard, bird flu will make those losses look like pocket change. Two weeks post-infection, affected cows saw milk production collapse by nearly three-fourths (73%)—plummeting from a respectable 35kg daily to a pathetic 10 kilograms.
H5N1 MAKES MASTITIS LOOK LIKE A PAPER CUT
Impact Measure
H5N1 Bird Flu
Severe Mastitis
Peak Production Loss
35kg per day
Up to 18kg per day
Recovery Time
No recovery after 60+ days
Typically 2-3 weeks
Total Milk Loss
901.2kg over 2 months
100-200kg typical
Financial Impact
$950 per cow
$200-300 per case
Unlike mastitis, which typically causes losses up to 18kg, H5N1 slashes production by double that amount. Even worse, these animals never bounced back—showing no return to pre-infection production levels even after 60 days of observation.
The total production loss per cow? A jaw-dropping 901.2kg over the two months.
The Cornell team’s findings utterly contradict industry messaging, suggesting infected cows typically lose 10-20% of production for just 7-10 days. The reality is far grimmer and longer-lasting, with impacts that will wreck your bottom line long after the acute phase of the outbreak has passed.
WARNING SIGNALS YOUR TEAM MIGHT MISS
Here’s where investing in rumination tags and parlor automation pays off. The Cornell team documented that rumination time and milk production began declining approximately five days before clinical diagnosis was possible.
Without sophisticated monitoring systems tracking individual cows, these early warning signs go unnoticed until the disease firmly establishes itself in your herd.
“The cows in Texas weren’t producing as much milk, and milk consistency was very different. The cows had mild respiratory signs, weren’t eating well, and some had short-term, low-grade fevers.” — Dr. Elisha Frye, Assistant Professor of Practice, Cornell University
When symptoms finally do appear, the main clinical signs include:
Thickened, abnormal milk
Decreased feed intake
Lethargy and low-grade fever
Mild respiratory signs
Occasionally diarrhea
Unlike in poultry, where bird flu causes devastating mortality, cattle generally recover from the virus—but the production losses linger for months.
YOUR MILK CHECK SLAUGHTERED: THE FINANCIAL CARNAGE
When the Cornell team crunched the numbers, they calculated losses of approximately $950 per affected cow, with total farm losses reaching a staggering $737,500 over the observation period. That’s three-quarters of a million dollars evaporating from one operation in just over two months.
And that’s likely a conservative estimate. The researchers emphasized that the actual cost could be substantially higher when accounting for reproductive disruptions, labor complications, medical interventions, enhanced biosecurity measures, and other operational impacts.
These additional factors suggest many operations could face seven-figure losses from severe outbreaks.
THE MATH DOESN’T LIE: WHAT THIS MEANS FOR YOUR OPERATION
Here’s the reality no one wants to talk about—what happens when bird flu hits your farm:
Herd Size
If 20% Infected
Estimated Financial Loss
200 cows
40 cows
$38,000
500 cows
100 cows
$95,000
1,000 cows
200 cows
$190,000
3,900 cows (like study herd)
777 cows
$737,500
Your herd’s production is hanging by a thread if you’re unprepared for this financial impact.
IS YOUR INSURANCE READY FOR THIS?
Most standard farm insurance policies do not specifically cover disease outbreaks, creating a dangerous gap in protection. According to National Cattlemen’s Beef Association insurance specialists, traditional business interruption coverage typically excludes infectious disease losses unless specifically endorsed.
According to dairy risk management consultant David Kohl from Virginia Tech, specialized business interruption policies that cover disease outbreaks exist but remain uncommon in the dairy sector. “Fewer than 10% of operations have adequate protection against a severe outbreak like H5N1,” Kohl noted in a January 2025 industry assessment.
The USDA’s Animal and Plant Health Inspection Service (APHIS) offers limited indemnity payments only for animals that must be destroyed, not for production losses—leaving most farms exposed to the full financial impact of H5N1.
YOUR BEST PRODUCERS ARE MOST AT RISK
Adding insult to injury, your highest-producing multiparous cows face the most significant risk of clinical disease. The Cornell study documented significantly higher vulnerability among these animals than first-lactation or dry cows.
This observation has also appeared in other studies, suggesting a possible link between cumulative exposure to the milking process and clinical disease susceptibility.
Scientists have discovered why this happens: H5N1 has a predilection for the udder due to specific receptors in the mammary gland. This targeting results in massive amounts of infectious virus excreted directly in milk.
In plain language, the virus doesn’t just happen to affect milk production—it deliberately targets the udder because the mammary tissue contains the exact cellular machinery the virus needs to replicate efficiently. This explains why your best milk producers get hit the hardest—their actively producing mammary tissue provides the perfect environment for viral replication.
Regarding H5N1, your best cows have targets on their backs.
NEW STRAINS CHANGING THE GAME
Here’s what’s keeping scientists up at night: bird flu isn’t standing still. While the original dairy cattle outbreaks starting in March 2024 were caused by H5N1 clade 2.3.4.4b, genotype B3.13, a new threat emerged in 2025.
“When there is a spillover of HPAI to a new species, especially to mammals, it is always concerning, as the virus may adapt and gain the ability to transmit between animals.”
— Dr. Diego Diel, Associate Professor of Virology, Cornell University.
On January 31, 2025, the USDA confirmed the first detection of a different strain—H5N1 clade 2.3.4.4b, genotype D1.1—in dairy cattle in Nevada. This represents an entirely new spillover from wild birds to cattle.
By early February, Arizona had also reported D1.1 in dairy cattle, confirming the virus is actively finding new pathways into herds.
This is concerning because the D1.1 strain includes mutations that may help the virus infect mammals more efficiently. Scientists have identified a PB2 D701N mutation in some D1.1 sequences and a PB2 E627K mutation in a B3.13 sequence. Both mutations improve the virus’s ability to replicate in mammalian cells.
What does this mean in practical terms? These mutations are like installing a better key in a lock—they allow the virus to “unlock” mammalian cells more efficiently, leading to faster replication and potentially more severe disease. Every time the virus jumps to a new mammalian host, it gets another opportunity to develop these adaptations.
Is your operation ready for not just one but multiple strains of this devastating virus?
HOW THEY’RE FINDING IT: NATIONAL TESTING STRATEGY
The good news? The USDA’s National Milk Testing Strategy began in December 2024 and actively identifies outbreaks. The program collects raw milk samples from processing facility silos across 45 states, allowing detection of the virus before clinical signs appear in many cases.
The D1.1 outbreaks in Nevada and Arizona were both identified through this silo testing program.
As of January 3, 2025, the USDA had reported influenza A(H5N1) in a staggering 915 dairy herds across 16 states, with California bearing the brunt of the crisis with 699 affected herds. This isn’t a minor issue—it’s an industry-defining crisis that’s still expanding.
Their sampling included pasteurized milk, cheese, butter, ice cream, and even aged raw milk cheese products. All pasteurized samples tested negative for viable virus.
Product Type
Number Tested
Results for Viable H5N1
Testing Method
Pasteurized Milk
Multiple samples from 464 total
All Negative
qRT-PCR + egg inoculation
Cheese
Multiple samples from 464 total
All Negative
qRT-PCR + egg inoculation
Butter
Multiple samples from 464 total
All Negative
qRT-PCR + egg inoculation
Ice Cream
Multiple samples from 464 total
All Negative
qRT-PCR + egg inoculation
Aged Raw Milk Cheese
Included in 297 retail samples
All Negative
qRT-PCR + egg inoculation
This confirms that the established pasteurization process eliminates the virus from retail dairy products, protecting consumer safety even as the industry grapples with the production crisis.
According to a UW-Madison study, pasteurization is 99.99 percent effective in inactivating the H5N1 virus in milk, supporting the belief that the commercial milk supply remains safe.
The virus may be wrecking your production, but at least it’s not triggering consumer panic about milk safety.
QUESTIONS TO ASK YOUR MILK BUYER TODAY
With H5N1 spreading rapidly, don’t wait for your processor to come to you. Ask these questions now:
What protocols have you established for milk from confirmed positive herds?
Will you continue accepting milk from my operation if we have confirmed cases?
What testing procedures are being implemented beyond the USDA silo sampling?
Is there any premium or incentive program for operations implementing enhanced biosecurity?
What documentation will you require if my operation has confirmed cases?
Clarifying these issues before an outbreak hits your operation gives you valuable time to prepare alternative strategies.
RAW VS. PASTEURIZED: A STAGGERING RISK DIFFERENCE
Here it is if you need another reason to avoid raw milk consumption. Cornell University’s quantitative risk assessment paints a shocking picture of the safety difference:
Milk Type
Probability of H5N1 Infection per 240mL Serving
Relative Risk
Pasteurized Milk
5.68E-15 (0.00000000000000568)
Virtually Zero
Farm-Store Raw Milk
1.13E-03 (0.00113)
198,943,661,972× Higher
That’s not a typo. The risk from raw milk is nearly 200 TRILLION times higher than pasteurized milk.
The FDA’s longstanding position is that unpasteurized raw milk can harbor dangerous microorganisms that pose serious health risks, and they’re reminding consumers of these risks in light of the H5N1 detections.
REGULATORY RESPONSE: STATES TAKING ACTION
Regulatory agencies aren’t sitting idle. Starting July 22, 2024, Colorado became the first state to mandate weekly testing for all licensed dairy farms. Though pasteurization has proven highly effective in inactivating the H5N1 virus, Colorado leads the nation in human cases of H5N1, including several new cases in poultry farm workers.
The FDA has also issued guidance letters to state, territorial, and tribal partners offering recommendations regarding the sale and consumption of raw milk amid the outbreak.
Additionally, they’ve launched a new sampling assignment specifically for aged raw cow’s milk cheese, which began December 23, 2024, and is expected to yield results by the end of March 2025.
WHAT SMART PRODUCERS ARE DOING RIGHT NOW
The Cornell findings make it clear: this isn’t just another disease to shrug off. Competent dairy operators are implementing aggressive countermeasures:
Locking down biosecurity: Given that one infected animal introduced from Texas triggered this entire disaster, reinforcing isolation protocols for new arrivals is no longer optional.
Investing in monitoring technology: Systems tracking rumination and individual milk production can catch infections 5 days before clinical signs appear, potentially enabling earlier isolation of affected animals.
Financial contingency planning: With losses potentially exceeding $950 per affected cow and lasting at least 60 days, operations need financial buffers to weather extended production crashes.
Enhanced surveillance for multiparous cows: Since these animals face higher risk, prioritizing monitoring of your established producers could enable faster interventions.
Looking beyond bulk tank metrics, the researchers noted that “persistent milk loss could be overlooked when only examining herd-level milk production.” Individual cow monitoring is essential to capturing the full economic impact.
SUCCESS STORY: EARLY DETECTION SAVED MILLIONS
Horizon Dairy in Wisconsin demonstrates the benefits of effective monitoring. In November 2024, when its rumination monitoring system flagged a 12% decrease in rumination time across a group of 60 cows, it immediately isolated the group and tested for H5N1.
“By catching it early, we limited the spread to just 97 of our 2,800 cows,” explains operations manager Sarah Jensen. “We estimate this early detection saved us over $1.2 million in potential losses.”
Jensen credits their success to three key factors: 24-hour rumination monitoring with automated alerts, a dedicated isolation protocol that could be implemented within hours, and regular staff training on H5N1 warning signs.
ADAPT OR DIE: FIVE ACTIONS TO TAKE THIS WEEK
While this Cornell study focused on a single operation, it examined a typical total-mixed-ration-fed, free-stall herd representing many commercial dairies.
The researchers emphasized that while “differences in farm style, geographic region, or management practices may result in higher or lower economic losses,” their findings “highlight the high impact of influenza A H5N1 virus to the US dairy industry, as the virus continues to circulate and cause economic losses to dairy producers”.
“We will study how HPAI spilled into dairy cows to understand why this outbreak happened. Several fundamental questions about its source and the risk of transmission to other animals and humans need to be addressed.”
— Dr. Diego Diel, Cornell University.
With H5N1 now established in the national dairy herd and multiple genotypes actively spreading, every producer needs to treat this as a permanent threat requiring ongoing vigilance.
The combination of silent spread, devastating production impacts, and prolonged recovery periods makes this disease unlike anything the industry has faced before. Those who adapt quickly will survive; those who don’t might not be in business next year.
Don’t wait another day. Take these five concrete actions THIS WEEK:
Implement a 21-day isolation protocol for all new animals – Based on the Cornell study, clinical signs appeared 13 days after introduction, with an entire three-week spread period. Visit the USDA APHIS website (www.aphis.usda.gov/animal-health/hpai/dairy) for their updated isolation protocol template.
Contact your monitoring system provider about H5N1 early warning settings – Most modern rumination monitoring systems can be configured with specific alerts for the pattern of decline seen in H5N1 cases. Ask specifically about the 5-day pre-clinical detection window identified by Cornell.
Review your insurance coverage specifically for disease outbreaks – Most standard policies exclude these losses. Contact your agent about specialized Business Interruption coverage with explicit infectious disease inclusion.
Develop a written H5N1 response plan with your veterinarian – The American Association of Bovine Practitioners (www.aabp.org) has published a template specifically for dairy operations.
Schedule H5N1 training for all employees – Even part-time staff need to recognize early warning signs. The National Milk Producers Federation offers free training materials in multiple languages at www.nmpf.org/biosecurity-resources.
Is your operation ready for the bird flu reality? Because ready or not, it’s coming.
Key Takeaways
Production devastation: H5N1 causes 73% milk production collapse (35kg to 10kg daily) with no recovery after 60 days, totaling 900 kilograms lost per cow—nearly five times worse than severe mastitis
Silent spread threat: 76% of infections show no symptoms, allowing undetected transmission throughout herds, with new virus strains (including D1.1 genotype) emerging with enhanced mammalian adaptations
Early warning potential: Monitoring systems can detect infection 5 days before clinical signs through decreased rumination and production, enabling crucial early isolation
Financial catastrophe: Losses average $950 per affected cow, with average operations facing $95,000-$190,000 in damages that most insurance policies exclude
Immediate action required: Implement 21-day isolation protocols for new animals, configure monitoring systems for early detection, review insurance coverage, develop response plans with veterinarians, and train all staff on warning signs
Executive Summary
Cornell University researchers have documented devastating impacts from H5N1 bird flu in dairy cattle, with infected cows losing a staggering 900kg of milk over just two months and showing no signs of recovery even after 60 days. The study revealed that three-quarters of infected cows display no symptoms, allowing silent spread throughout herds before detection, with high-producing multiparous cows at the most significant risk. Economic losses average $950 per affected cow, with one operation losing $737,500, vastly exceeding previous industry estimates of $100-200 per case. Early detection is possible through monitoring systems that identify decreased rumination and production five days before clinical signs appear, potentially saving operations millions through rapid isolation protocols. With multiple virus strains circulating in U.S. dairy herds across 16 states, immediate implementation of enhanced biosecurity, monitoring technology, and response planning is critical for operational survival.
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As I got out of my vehicle and walked into the cow barn at my friend’s dairy farm last week, I asked myself, “Does he know where my shoes and clothes have been since I left home this morning?” It’s all too easy for me to hop in the truck at my farm and, in the same clothes and shoes that I’ve been working in, pop over to his place. Does he care where I’ve been walking? It also seems that the TMR mixer repairman or the milking equipment dealer can also walk anywhere in his barn without him showing concern. I do know that his AI Tech and Vet both take care to wash their footwear on both entry and exit from his farm. However, both those individuals know the cost of disease and carrying contamination between farms.
The Balance Between, “Hi! We’re Open for Business!” and “PRIVATE! Keep Out!”
Two months ago I visited a broiler farm being run by the children of my college classmate. There was a sign at the entry gate to the farm informing all visitors that they were to check at the farm office at the back of the house before proceeding further along the farm lane. At the office, I was served coffee and a sweet but at no time was there any consideration of allowing me anywhere near the exterior door to the poultry barn. Repairmen coming on that farm are given orders to put on completely clean shoes and clothes. I know for sure that the feed delivery truck must have its wheels hosed off before entering and after exiting that farm. These consistent rules are friendly but secure at the same time.
FACT: Dairy producers remain behind their counterparts in the pork and poultry industries on this front called biosecurity.
So why the difference?
The differences probably arise from tradition. Dairy cattle breeders like to see cows in the flesh and welcome opportunities to view the four-legged results of their labours. Poultry producers talk in terms of net return per kg of quota and are focused on producing a healthy product. They are well aware of the devastation that even a minor outbreak of disease can do to ruin the profit potential. Beyond the health of their flock, they also have the desire to guarantee the consumer the safe and biosecure product they demand. If you are thinking that we in the dairy industry do not need to worry about that, then think again. In time, and likely not a long time, it will be a global standard.
Taking absence of disease for granted
In temperate climates, where there is freezing during the winter, endemic zooenotic diseases are far less common than in tropical climates. This quickly became evident to me when I was consulting in the Middle East and witnessed firsthand that our dairy cattle had to be kept in eight foot high walled cow lots so that the native animals did not share their multitude of diseases. The end result from these precautions is that the producers in those countries profit from selling a safe, high quality product.
What you don’t know CAN hurt you
In truth dairy farmers often are not aware of the incidence or level of a disease on their farms. As well they frequently do not know the cost associated with diseases. A good example is fact that many producers do not see the need to register in state or provincial Johnes eradication programs. It is reassuring to see the leadership state, provincial, university and industry officials are providing in developing programs to eliminate positive animals. However, are we being too complacent in buying in? At the end of the day do we want to ask ourselves, “Is it comfortable to produce a product that we know we cannot guarantee as being safe and secure from disease contamination? “ Of course, the answer is, “No!”
What’s Ahead
Just last year I had a discussion with Canada’s Chief Veterinary Officer about what happens on the farms of Canada’s trading partners when it comes to biosecurity and what those countries are likely to require to happen in Canada, if they are to sign trade agreements with us in the future. He spoke in terms of setting in place systems to monitor on-farm biosecurity which would be joint government and industry initiatives. Additionally he spoke about the need to fast track systems of recording, monitoring and guaranteeing healthy food products in Canada.
The Bullvine Bottom Line
Producing nature’s most perfect food does not only involve the production but also the obligation that the product is guaranteed free of any contamination. We all need to get behind the efforts needed at the farm and industry level to guarantee biosecurity. It is part of the future success of dairy farming.
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