The holidays came with a side of flu for many Americans, with 40 states reporting high or very high levels of illness last ...

Outbreaks of the stomach flu are spreading across the U.S and are far higher than average for December over the past 12 years, according to CDC figures.

A new map created using data from the U.S. Centers for Disease Control and Prevention (CDC) has revealed the locations across the country where bird flu has been detected in wastewater samples.

Genetic analysis found the virus had mutated, making it more easily transmissible to humans, the CDC ... flu infections in wild animal populations, which in turn have "put more humans at risk ...