A genetic analysis suggested the bird flu virus mutated inside a Louisiana patient who contracted the nation's first severe case of the illness, the CDC said this week. Scientists believe the ...

The CDC reportedly found potentially troublesome bird flu mutations in Louisiana patient. This Louisiana case of bird flu marks the first instance of severe illness that's linked to the virus ...

"The Chinese poultry lineage may have experienced more vaccine-driven selection compared to other lineages," the researchers ...

The first person has died of bird flu in the United States, the Louisiana Department of Health confirmed on Monday. The ...

The Centers for Disease Control and Prevention says hospitals treating people for the flu should test them for avian ...

When a pathogen — any organism that causes a disease — jumps species, scientists get nervous because its genetic makeup can ...

Avian influenza A (H5N1) has mutated, so the symptoms of bird flu could change as more people get sick in 2025.

The U.S. Centers for Disease Control and Prevention is urging health care workers to accelerate bird flu testing for patients ...

Seven Delmarva-region commercial operations have now reported cases of the highly contagious virus.