Flu A and Flu B are distinct viruses, each with its own challenges. Understanding the difference helps you protect your health against the flu battle.

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most common and the most severe.

For a second time this season, at least 41 states are reporting high or very high levels of the flu. Here's how to stay safe.

RSV is usually contagious for three to eight days. A patient also may be contagious a day or two before experiencing symptoms ...

The United States is seeing a second peak in flu cases this season. After doctor’s office visits for flu dipped early this ...

Bird flu has decimated poultry flocks and infected cattle herds. The risk to humans is currently low, but that could easily ...