The common cold looks trivial compared with illnesses that fill intensive care units, yet it still knocks out workers, ...

Learn more about the common cold, the viruses that cause it, and why it’s so difficult to find a vaccine for it.

A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine ...

Flu season isn't in full swing yet in the United States, but a mutated strain of the virus that has caused severe outbreaks abroad is sparking concern about the winter ahead. A new version of ...

Health leaders are raising concerns about subclade K, a variant of influenza A that has mutated from the original H3N2 strain previously known as J.2.4.1.

If you have a mild illness like a cold, it’s fine to get a flu shot. If you’re already experiencing flu-like symptoms, like ...

Influenza cases are down across the United States, but a new flu strain mutation identified in August is causing a spike in hospitalizations.

Following a national trend, 52 counties in Florida saw increasing cases of influenza A driven by a new mutation called ...