ER doctor explains 2025-2026 H3N2 flu symptoms, treatment & when to go to the hospital. Get vital data on this severe flu ...

While vaccines may not fully protect everyone, public health experts say they’re still proven to help prevent serious illness ...

A late-emerging influenza A mutation known as subclade K weakened protection, but doctors say vaccination still reduces ...

Researchers are not just worried about the virus popping up on American farms. Other types are causing trouble around the ...

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

U.S. flu infections are showing signs of a slight decline, but health officials say it’s not clear that this severe flu ...

While the new findings are encouraging, "vaccines won’t do any good if people don’t get them," one expert said.

Australia’s 2025 flu season lasted weeks longer than it normally does. Hong Kong’s hit so early that the rollout of seasonal ...

Is it flu A or flu B, and how long is it contagious? Here's what to know about the flu virus running rampant in New Jersey, ...

The CDC estimated there have been at least 7.5 million illnesses in the U.S., 81,000 hospitalizations and 3,100 deaths from ...

It’s getting called a “super flu” and the latest federal data shows Florida and 29 other states are now in the top tier of ...

Plenty of people – about 1 in 3, according to some studies — feel bad for a day or two after they get a flu shot. The most common symptoms include headaches, muscle aches, fatigue and fever, all of ...