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

The Tennessee Influenza Weekly Report shows that illness and positive lab tests are both up from the previous week.

We are in the heart of flu season and according to the Center for Disease Control, Georgia has reported high influenza levels ...

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

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