The U.S. flu season is starting slowly, and it’s not clear if it will be as bad as last winter’s. But some health experts are ...

The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to ...

A mutated strain of the flu is surging worldwide, sparking concerns about a severe flu season in the U.S. Here's what to ...

The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K ...

Last winter, for the first time since Covid-19 entered our world, influenza reclaimed its spot as the worst actor among the cast of viruses that sicken people during the cold and flu season. The ...

There are reports of this strain of the flu causing more severe illness, and early data suggest that protection against the flu from previous infections or the vaccine is “suboptimal,” according to ...

The United States may be headed for a rough flu season, with a virus that causes more severe symptoms than the one last year ...

The variant is known as influenza A subtype H3N2 subclade K–sometimes called “subclade K” for short—and it has been detected ...

BOSTON — Doctors are raising alarms about a newly mutated strain of the flu that could drive cases higher this season. The ...

Health experts recommend an annual flu vaccination for everyone older than 6 months, especially as the holiday season nears.

Egg producers suspect bird flu is traveling through the air. After a disastrous Midwestern outbreak early this year, we ...