Scientists provided the most complete view of bird flu's spread through wild bird populations across North America, explaining how the dominant strain advanced, maintaining the risk of human ...

Highly pathogenic avian influenza H5N1 has killed black vultures across the southeastern United States in repeated waves that, unlike outbreaks in most wild bird species, have persisted year-round.

The H5N1 strain of highly pathogenic avian influenza has spread across the globe, infecting hundreds of birds and mammal species. Few places offer a clearer view of the virus’s spread in urban ...

Bucks County officials are warning residents not to touch or interact with wildlife in county parks after several birds in the county tested positive for avian flu. Several wild birds were found dead ...

Experts confirmed that seven young northern elephant seals on the beach at California’s Año Nuevo State Park carried a deadly form of avian influenza, H5N1, the first recorded infection in these seals ...

Avian flu concerns are ramping up further in Weld County, after hens at an egg operation with 1.3 million chickens tested positive for the virus last week. Agriculture officials have issued poultry ...

PESCADERO — Every year from late December through March, scientists from the Beltran and Costa labs at UC Santa Cruz set out for the beaches of Año Nuevo State Park. There, thousands of elephant seals ...

Starting in 2024, severe infections from avian influenza were reported in North America. Every severe case was of this newly dominant D1.1 strain, though at the time, the disparate geographical ...