The 2025-26 flu season has been brutal, so far. At least 19 million Americans have had it, and it's not over yet. Flu season ...

Flu season might be winding down — but don’t stash the tissues just yet. A little-known respiratory virus with no vaccine or ...

When vaccines are designed, scientists have aimed to prevent the virus from spreading to others, or stop it from producing ...

Add Yahoo as a preferred source to see more of our stories on Google. The form of the virus targeted by this year’s flu vaccine is somewhat different from H3N2, the strain currently causing a sharp ...

Add Yahoo as a preferred source to see more of our stories on Google. A new flu variant known as subclade K is on the rise across the country. Although a spike in this particular strain of influenza, ...

Scientists have finally watched influenza viruses break into living human cells in real time, catching the microscopic invaders as they latch on, glide across the surface and slip inside. Instead of a ...

You already know about fevers, chills and coughs, but this issue may also occur with a flu B infection.

Forget COVID-19 and the flu. A "mystery throat virus" is going around, causing sore throat, runny nose, fever and even diarrhea -- and offering no real treatment. The odds are fairly high that ...

The Centers for Disease Control and Prevention released a report March 12 on the effectiveness of the flu vaccine for the ...