ANSWER: Both colds and influenza (the “flu”) are respiratory illnesses that are caused by viruses. Influenza is caused specifically by the influenza viruses, which come in two main types (A and B).

Every flu season, the same questions come up in doctors’ offices, pharmacies and family discussions: Do antiviral drugs ...

WASHINGTON (AP) - Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with holiday travel. That variant, known as “subclade K,” led to ...

Everyone knows that the fall brings flu season, replete with aches, pains and a new version of the vaccine. But why is cold weather synonymous with this virus? Virologist and William & Mary Associate ...

Flu strikes every winter, but something seems to be different this year. A seasonal flu virus suddenly mutated in the summer; it appears to evade some of our immunity; has kick-started a flu season ...