"The flu" has several strains, with flu A and flu B considered the most common and most severe. Here's what to know as flu ...

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 ...

Cases of the flu viruses continue to surge across the U.S., placing a strain on health care systems and causing tens of millions of illnesses and thousands of deaths each year. Each flu season, there ...

The mutation, known as subclade K, has already caused a surge in flu cases in Australia, Canada, Japan, and the U.K.

Here’s our weekly round-up of what illnesses are spreading the most in Metro Detroit communities, according to our local ...

Health leaders are raising concerns about subclade K, a variant of influenza A that has mutated from the original H3N2 strain ...

Ahead of the holiday tourist rush, city health officials in New York City reported nearly 14,000 flu cases in the first week ...