The worst flu season in years is swamping California, prompting a renewed surge in hospitalizations as officials warn the disease could continue circulating at high levels for weeks to come.

That includes 380,000 hospitalizations for the flu, 16 million related medical visits, and 20,000 flu-related deaths. The 2021 season was unusually low because of COVID-19.

A mask lies on a sidewalk. It’s hard to believe it's been five years since the start of the COVID-19 pandemic. Since 2020, the disease has killed more than 1.2 million Americans—more than in ...

Cases of the seasonal flu in the U.S. have reached their highest numbers in more than a decade, according to the Centers for Disease Control and Prevention.

This leading-edge research, described in the journal Science, used a scanning electron microscope to peer at a razor as it sliced through strands of hair. It found that, under the right conditions ...