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 early outbreaks in ...

Some surveys have shown that nearly 30% of people believe getting a flu shot can actually cause influenza. This belief is likely due to common side effects linked to the vaccine, including headache, ...

With the common cold, flu, COVID-19 and RSV all presenting a threat of illness this fall and winter, here's how to distinguish between the symptoms of each condition.

H5N1, also known as avian influenza, is a subtype of influenza virus that infects birds and mammals, including humans in rare instances, says the World Health Organization (WHO).

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 ...