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

Scientists believe the mutations may allow the virus to better bind to receptors in the upper airways of humans.

After someone in southwest Louisiana was hospitalized with a severe case of bird flu, the first such illness reported in the ...

A person in Louisiana has contracted the nation's first severe case of bird flu after the virus mutated inside their body, ...

Public health officials are sounding the alarm after bird flu mutations were discovered in a Louisiana patient.

A sample of the virus found in a critically ill patient in the US has shown signs of mutating to better suit human airways, ...