"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 ...

Flu symptoms typically lasts at least five days and up to two weeks. Some symptoms, like a cough, may persist even longer ...

Much of the concern this flu season is coming from the spread of subclade K, a subtype of influenza A. Similar subtypes have ...

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 ...

Flu cases are slowly rising in Illinois in the lead-up to holiday gatherings this week, so what should you know before you ...

Cases of the flu continue to spike in the U.S., with the most recent data from the U.S. Centers for Disease Control showing a ...

A new strain called H3N2 subclade K has emerged, raising concerns that the body may not be able to fight it off as well.

Last year’s flu season was the roughest in nearly a decade. “We generally don’t have two bad flu seasons back to back,” said ...

Doctors are seeing an increase in patients with coughs, colds, and more severe respiratory symptoms due to the flu, with the ...

Flu season is starting to tick up in the U.S. And, looking at clues from other countries, we may be in for a rough winter. But not all influenza is the same. And there are some notable differences ...