A new PEARLS article in PLoS Pathogens reviews the rapid evolution and pandemic potential of emerging influenza A viruses, ...

Global experts urge to prepare for possible new pandemic as new H5N1 bird flu outbreak spreads to dairy animals, human infections. Here's what to know ...

The first death caused by H5N1 bird flu was reported in January 2025. Some believe the virus could eventually pose a widespread risk to the public.

Here's what to know. Bird flu, also known as H5N1, has been around for decades. But the discovery in 2024 that the virus spread from wild birds to cows came as a surprise to public health experts, ...

In California, health officials say they are also checking flu cases across the ... been confirmed as seasonal subtypes H1 or H3, which rules out infection with H5N1. The fact that no other ...

California is providing the gift ... all samples tested have been confirmed as seasonal subtypes H1 or H3, which rules out infection with H5N1 [bird flu]. The fact that no other human cases ...

In 1997, 18 cases of avian influenza A H5N1 infection occurred in humans in Hong Kong. It soon became evident that the avian influenza virus H5N1 could cross the species barrier and infect humans.