A new mutation and the first severe case of H5N1 bird flu discovered in a human in Louisiana has raised concern among some experts of a pandemic.

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 100 federal scientists who track bird flu, including vaccine and food safety experts, have been laid off. This comes as the deadly pathogen rips through dairy herds and poultry flocks.

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

Cambodia’s Ministry of Health recently confirmed the country’s twelfth human case of H5N1 avian influenza so far this year.

Many countries around the world vaccinate their poultry birds against H5 bird flu viruses, especially in regions where the virus is endemic or where there is a high risk of outbreaks, such as in ...

There have been 68 human cases of bird flu — flu strain H5N1 — in the U.S. since the beginning of 2024, mostly arising from contact with infected cattle and poultry. Infectious disease experts ...

A recent crop of human cases at a chicken farm highlight the risks of the ongoing outbreak. Here's what scientists fear could happen next in the evolution of the virus.

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

Genetic tests of farmworkers could reveal avian flu evolution ... The risk to the public continues to be low. Both cases were mild and with little or no respiratory symptoms.

Many countries around the world vaccinate their poultry birds against H5 bird flu viruses, especially in regions where the virus is endemic or where there is a high risk of outbreaks, such as in ...