Seasonal fevers, runny noses and coughs are caused by a number of illnesses.

Respiratory viruses are usually most active from October through March, health officials say.

Adenovirus infections are usually mild but can cause a range of illnesses. Here's how it spreads and how to reduce your ...

One of the most common viruses in the world could be the cause of lupus, an autoimmune disease with wide-ranging symptoms, according to a study published Wednesday. Until now, lupus was somewhat ...

This sexually transmitted infection is almost entirely preventable. Here's what experts say you really need to know to ...