New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

More than 11,700 chickens were culled in Odisha’s Puri in February this year after detecting the H5N1 strain of avian ...

Although the avian flu (H5N1) virus may not be making the news as frequently, it is still working hard behind the scenes, ...

Topline. Here’s the latest news about a global outbreak of H5N1 bird flu that started in 2020, and recently spread among cattle in U.S. states and marine mammals across the world, which health ...

H5N1, a strain of the flu virus known to infect bird species globally and several mammalian species in the U.S. since 2022, has now appeared to have breached a new barrier of inter-mammalian ...

The bird flu that’s been making news in the United States is a virus called H5N1. Some flu viruses carried by birds cause only mild infections and are classified as low-pathogenic viruses.

However, the U.S. has a small stockpile of H5N1 and H7N9 bird flu vaccines, so if an outbreak were to happen among humans, the amount of vaccines would not be enough to withstand the outbreak.

The U.S. Centers for Disease Control and Prevention said on Monday it has ended its emergency response for H5N1 bird flu, ...

Bird flu was probably circulating in dairy cows for at least four months before it was confirmed to be the highly pathogenic H5N1 virus, according to a new analysis of genomic data by scientists ...