While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most common and the most severe.

Low vaccination rates may be contributing to the spread of flu, but data suggests the number of cases so far this season is ...

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 ...

But what does it mean to have a flu A or flu B season? Do these types of flu have different symptoms? And does one cause more severe illness than the other? Experts have been studying influenza ...

Flu cases had previously peaked this season at the very end of December. At week 52 —ending on December 28—the percentage of ...

During the COVID pandemic, RSV showed a slightly odd pattern: like flu, it basically disappeared in the 2020–2021 season, ...

The Godley Independent School District in Godley, Texas, reported that its attendance was down to between 70% and 80% ...

typically change more slowly than Influenza A and only infect humans. Experts say there isn't much difference in symptoms between the two, which both present as flu symptoms. "They're clinically ...

Hospital visits in Illinois due to flu are "quite high," with COVID and RSV also circulating. But what are the symptoms of ...

What does it mean to have flu A or flu b this season, and do these types of flu have the same symptoms? Here's what to know about the flu viruses. This pie chart shows the number of flu cases ...