The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.
The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...
The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the ...
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.