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

A genetic analysis of the bird flu in the body of a Louisiana man who contracted the first severe case found it mutated inside of his body, a development that could allow the virus to more easily spread to humans.

The CDC said Thursday its analysis of samples from a Louisiana patient with bird flu showed mutations not seen in samples from an infected backyard flock

Federal health officials have confirmed unsettling new details about the first United States case of severe bird flu,

The Centers for Disease Control and Prevention confirmed Wednesday that the first case of severe human illness for H5N1 bird flu occurred this week in Louisiana, marking the first hospitalization for the disease in the United States.

Health experts are raising concerns after genetic sampling of the first severe H5N1 bird flu case in the U.S. Map shows US states where 'damaging' Arctic blast will hit first - and more to come Look inside the Breakers,

A genetic analysis of viral samples from a patient in Louisiana hospitalized with the first severe case of bird flu showed mutations that may result in the virus becoming more transmissible among humans,

In 2024, at least 66 human cases of bird flu have been reported in the United States, each one raising the risk of another pandemic like COVID-19. So far, most cases have been described as “mild,” which means they weren't hospitalized.