Long Island’s last commercial duck farm is rebuilding after a bird flu outbreak forced the destruction of its entire ...

Both swine and avian influenza are strains of influenza A. Just as swine flu strains tend to infect pigs, avian flu strains ...

The H5N1 avian influenza virus has infected birds and mammals around the world. As of June 2025, 70 people have been infected ...

The H5N1 avian influenza virus has infected birds and mammals around the world. As of June 2025, 70 people have been infected ...

The strain of bird flu that infected a Michigan dairy worker in May 2024 is capable of airborne transmission, according to ...

The bird flu (avian H5N1 influenza) has been circulating widely in cattle and other mammals. Many researchers note that there is a risk of a human pandemic. Some studies suggest that older humans ...

The genotype of H5N1 that originally jumped into cows from birds is called B3.13. This type has been associated with relatively mild illness in cows and humans.

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to help the virus copy itself in mammals — including humans — more ...

Key Takeaways. Unique mutations in the H5N1 strain enhance replication in human cells and cause severe disease in mice. The virus has spread from birds to mammals, including dairy cows, and ...

HPAI A(H5N1) clade 2.3.4.4b emerged in 2021 and resulted in fatal infections in poultry as well as terrestrial and marine mammals. 1 In early 2024, influenza A infection was first recognized in ...

Study compares 2004 and 2024 H5N1 strains, ... The virus has caused fatal infections in many different mammals. In March 2024, the 2.3.4.4b clade was first detected in dairy cattle in Texas.