The USDA Animal and Plant Health Inspection Service (APHIS) National Veterinary Services Laboratories recently delivered surprising news. A dairy cattle herd in Nebraska has tested positive for the highly pathogenic avian influenza (HPAI) H5N1, marking the first known case of HPAI in cattle within the state. Although this outbreak within dairy cattle initially occurred in March 2024, it’s the first instance in Nebraska. As cases have been relatively limited to a handful of states, APHIS teams are on the ground, collaborating with the Nebraska Department of Agriculture to carry out comprehensive investigations and assessments.
Though this detection significantly impacts the Nebraska cattle farming community, it will not alter USDA’s diligent eradication strategy for avian influenza. Biosecurity persists as a vital element in preventing the spread of disease. USDA strongly advocates dairy farms across the nation amplify their biosecurity protocols, particularly with the upcoming fall migratory bird season. Producers are urged to report any unusual clinical signs in their livestock or unexpected wildlife mortality to their state veterinarian to refine containment measures.
Consumer Health Remains Secure
An assurance to consumers remains crucial in times of such uncertainty. According to FDA, there is no cause for concern regarding consumer health or the safety of commercial milk supplies despite the detection. It is affirmed pasteurization effectively neutralizes the H5N1 virus. Milk intended for human consumption originates only from healthy animals, with milk from potentially impacted animals being safely segregated from the human food supply.
Lessons from the West Coast
Experiences from other regions can provide valuable insights into managing such outbreaks. A pertinent case is that of Zonneveld Dairies, Inc. in California, which faced HPAI outbreaks in October 2024. Jacob Zonneveld, the dairy’s president, reflected earlier this year at the 2025 California Dairy Sustainability Summit in Visalia on the challenges the outbreak presented.
With a sprawling operation of 10,000 cows and an equivalent number of replacement heifers spread across 6,600 acres in Laton, Calif., Zonneveld points out the challenges in preventing birds from accessing feed piles, emphasizing the role of biosecurity in treating infected cows, rather than prevention.
Like Nebraska, California dairies faced significant hurdles. In November, Zonneveld Dairies experienced a 15% decrease in milk production, signaling the peak impact of the epidemic. Despite a gradual recovery, production levels remain slightly lower compared to the previous year.
The persistent nature of avian influenza and its contingent effects on dairy farming call for an unwavering commitment to biosecurity and cross-sector cooperation.
Your Next Read:
Enhancing Biosecurity on Calf Ranches: Balancing Animal and Human Health
