"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 ...

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 ...

Cases of the flu viruses continue to surge across the U.S. and California, placing a strain on healthcare systems and causing tens of millions of illnesses and thousands of deaths each year. Two ...

This flu season medics have been struck by the uptick of cases involving the type B flu virus, which has been predominating the season for the first time in 27 years. Influenza can be split into four ...

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

(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the Centers for Disease Control and Prevention since the start of ...

The death toll and economic damage associated with flu highlight its role as one of the most harmful viruses in history.

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