For the first time, scientists have been able to watch the flu virus live as it infects human airway cells. They developed a ...

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 2025-2026 flu season seems to be affecting children more severely than usual. Renphoto/iStock via Getty Images After a sharp ...

Central California and rural Northern California are reporting the highest levels of flu in the state, with 23% and 26% flu ...

A new version of the flu virus is now driving most infections this season, and cases continue to rise across the United States. The strain, known as H3N2 subclade K, has quickly become the dominant ...

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 ...

Doctors and scientists say this year's influenza season could be tougher than usual. A new version of the flu virus, called H3N2, is spreading quickly. At the same time, fewer people are getting flu ...

Flu, COVID-19, the common cold and RSV have similarities, but they differ in their severity, contagiousness and symptoms. Vaccines are available for COVID-19, the flu and RSV. However, there is no ...