The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea and nausea, especially among children. As with COVID, some people also ...

Every winter, respiratory viruses, especially influenza, SARS-CoV-2 and RSV, put huge pressure on healthcare systems throughout Europe. In a typical season, flu causes up to 50 million symptomatic ...

A whole branch of the influenza virus has been missing without a trace since 2020. It is likely gone for good, says expert.

As we get deeper into flu season, a new type of the influenza virus has been identified, the Centers for Disease Control and ...

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 ...