As flu cases rise across the country, here is everything to know about testing yourself for the illness at home.

Do you have a sore throat, a runny nose and muscle aches? It could be a common cold, a case of the flu -- or COVID-19. The illnesses all share similar symptoms, sometimes making it hard to distinguish ...

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

December may be a popular month for holidays and celebrations, but it's also notorious for something else: the flu. Flu season — which is commonly considered to run from October to May — hits its peak ...

Known as subclade K, a new, mutated flu strain that has dominated in Europe and Asia is now rapidly spreading across the US.