(NEXSTAR) — As flu and RSV move across the U.S. and elsewhere – in addition to COVID-19 – there are increasing concerns about strep throat, and the bacteria that causes it, streptococcus. Like RSV, or ...

The itching, redness and swelling of an allergic reaction are caused by mast cells—the vigilant first responders of the immune system that spring into action with histamine-filled granules in response ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (NEXSTAR) — As flu and RSV move across the U ...