(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests ...

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 ...

SINGAPORE: Although influenza – better known as flu – is a common illness that most people recover from without treatment, it ...

RSV is usually contagious for three to eight days. A patient also may be contagious a day or two before experiencing symptoms, the CDC said. Infants and those with weakened immune systems, however, ...

Specifically, the CDC notes that H1N1- and H3N2-related variants, both type A flu strains, are the predominant flu viruses circulating this season. But what does it mean to have a flu A or flu B ...