Doctors recommend getting your flu shot annually, since the specific influenza strain it targets varies from year to year.

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The new flu variant, H3N2 subclade K, is a mutation of the common flu A subtype, which is often the flu "going around" come late ...

A graduate student at Fred Hutch Cancer Center has produced a near real-time picture of how well the human immune system is ...

Every year, flu vaccines are updated to match the flu viruses expected to circulate. For 2026, the vaccine focuses on several influenza strains that research predicts will be most prevalent. This ...

Add Yahoo as a preferred source to see more of our stories on Google. PORTSMOUTH, Va. (WAVY) — The 2025-2026 flu season has been one of the worst in recent history. According to CDC data, during the ...