VRising Cases in Poultry, Dairy Cattle, and Wildlife Spark Biosecurity Efforts and Human Health Concerns
The spread of avian flu continues to impact U.S. poultry farms, with a confirmed outbreak at Rose Acre Farms in Indiana. This facility houses 2.8 million birds, and strict biosecurity measures are in place to contain the virus. So far, at least 13 million birds have been lost to outbreaks this year.
The USDA has reported additional cases in backyard poultry and wild birds, including geese, ducks, and raptors. Over 90 new cases were confirmed across various states, with samples collected at the end of 2024 and into 2025.
Dairy cattle have also been affected, with five new cases confirmed in California. The national total has now reached 949 infected herds. In addition, mammals are showing signs of infection, including domestic cats, red foxes, and a gray squirrel. Two bottlenose dolphins in Florida also tested positive for the virus.
European health agencies have released a guide for tracking avian flu mutations. The report highlights 34 mutations that could make the virus more transmissible to humans. “Our work identifies key mutations linked to a potential spread to humans, requiring rapid detection and response,” experts stated.
As avian flu continues to spread, farmers and health officials remain vigilant, strengthening biosecurity measures to limit further outbreaks.