This is an archived article and the information in the article may be outdated.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) – Three respiratory illnesses, ...

(NEXSTAR) – Three respiratory illnesses, COVID-19, respiratory syncytial virus (RSV) and the flu, continue to infect hundreds of thousands of Americans daily – which can make it hard to tell what’s ...

Girl taking a test after getting COVID-19 symptoms on January 4.Brittany Murray/MediaNews Group/Long Beach Press-Telegram/Getty Images Sore throats and runny noses are increasingly common in ...

Is that cough and lingering headache a sign of a common cold, the flu, or worse — COVID-19? The seasonal winter holidays bring a spike in cold, flu and COVID-19 symptoms and case according to Johns ...