A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the first severe case of the ...

Growing concerns surrounding the transmission of H5N1 bird flu. The CDC reports that samples collected from a severely ill ...

The agency, in its latest update released Thursday, said the mutations were not found in samples taken from wild birds, suggesting the virus changed over the course of the patient’s infection.

A Northern Kentucky resident has died from a rare case of human rabies, health officials say. In a press release Friday, the ...

A big cat sanctuary in Washington is temporarily closed and quarantined after bird flu killed 20 wild cats there, including ...

America is heading into an even higher-risk period as the seasonal flu begins to circulate. This also raises a question of ...