Flu activity has ticked back up slightly in the US, thanks to a very small increase in infections caused by influenza B — ...

The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K that’s behind early surges in the United Kingdom, Canada and Japan. Now, with ...

Researchers uncover how a key human immune protein curbs H5N1 avian flu, but the virus is evolving—could we be on the brink of a new zoonotic threat? Research Letter: Replication Restriction of ...

All viral activity benchmarks have gone down, except for a slight increase in the death rate. Here's what to know about the ...

The number of prescriptions for Tamiflu (oseltamivir), an antiviral used against influenza A and B, has been surging in January and February, according to data assembled by GoodRx from pharmacies and ...