It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the same. There are some notable differences between flu A and flu B strains. On ...

Add Yahoo as a preferred source to see more of our stories on Google. The new flu variant, H3N2 subclade K, is a mutation of the common flu A subtype, which is often the flu "going around" come late ...

The flu is once again spreading far and wide. The Centers for Disease Control and Prevention announced Friday there was a 19% rise in people testing positive for influenza in the most recent week of ...

New state data shows that flu activity is ramping up early this season, with the Bay Area a hotbed for flu illnesses.

The CDC reports a highly mutated Cicada COVID variant BA 3.2 has been detected in at least 25 states including New Jersey in what could result in a summer surge of new COVID-19 cases, colliding with ...