The U.S. government failed to eliminate the virus on dairy farms when it was confined to a handful of states. Now at least 875 herds across 16 states have tested positive.

The rise of bird flu across farms in California has raised questions about the virus and its potential threat to humans.

The HPAI H5N1 virus has spread globally, infecting birds, mammals, and some humans. Most human cases are mild.

The 2024–25 flu shot doesn’t prevent H5N1 bird flu but could play a pivotal role in preventing a pandemic.

Though H5N1 has been circulating nationwide in wild birds, domestic poultry, and mammals since 2022, you may have only been ...

Flu is taking off in the U.S., with 40 states reporting high or very high levels of flu-like illness last week ...

APHIS classifies the flock as a commercial operation – the state’s first since the U.S. outbreak began in 2022.

There’s likely nothing to fear about these reports, given the general mildness of human metapneumovirus, experts say.

The latest weekly report from the Arkansas Department of Health shows flu activity is increasing significantly in the state.

The administration said it was committing $306 million toward improving hospital preparedness, early-stage research on ...

British Columbia had 69 confirmed HPAI flock infections in 2024, compared to 17 in all other provinces combined.

Doctors say the case of a teen left in critical condition shows H5N1 "can cause severe human illness." Mutations in the virus are deepening concerns about the spread of H5N1.