The patient in Louisiana who was hospitalized with severe bird flu illness was found to have a mutated version of the virus.

In 2024, at least 66 human cases of bird flu have been reported in the United States, each one raising the risk of another ...

Genetic analysis of H5N1 bird flu virus that infected a Canadian teenager shows 'worrisome' mutations, new studies reveal.

The CDC previously confirmed the first severe human case of bird flu in Louisiana, but now the CDC has confirmed a virus ...

The CDC called findings about bird flu mutations in a human case “concerning” but says the risk to the general public from ...

Tiny genetic alterations could help the bird flu virus enter cells in the upper respiratory tract, the C.D.C. said. But there ...

Birx added that her greatest fear is someone getting infected with bird flu during the regular seasonal flu, potentially ...

What is the bird flu pandemic risk? CDC analysis suggests the H5N1 virus has the capacity to mutate in ways that could make ...

Genetic analysis of H5N1 bird flu viruses from a severely ill patient in Louisiana revealed multiple mutations that may ...

While these mutations don’t currently enable human-to-human transmission, experts warn of increased risks if bird flu mixes ...

The CDC's analysis revealed changes in the hemagglutinin (HA) gene, a critical component for the virus's ability to attach to ...