Phenylephrine is included in many cold and flu products, but a scientific panel last year found that it doesn't really do its ...

a professor of microbiology and immunology at the Emory University School of Medicine. Here’s what to know about the flu viruses. Influenza A viruses come in many varieties. Four subtypes ...

“Symptoms of the flu include fever, fatigue, cough, body aches, headache, sore throat and stuffy/runny nose,” says Corey Fisher, DO, a family medicine physician with the Cleveland Clinic.

The history of the influenza virus can teach us modern lessons about the flu. Influenza has been around for hundreds of years ...