Here’s what causes colds to spread so easily, how long they are usually contagious and how they’re most commonly treated.

Common cold and sinus infections share similar symptoms. Knowing the difference is important. Colds usually resolve within 10 ...

In a KUSI interview this week, San Diego pediatrician Dr. Curtis Leong shared timely advice for parents navigating everything ...

Respiratory syncytial virus is common but it can be dangerous for some infants and young kids. Here's everything parents need ...

The herpes virus that commonly causes cold sores affects how tightly coiled our DNA is and makes it shrink, all to help itself grow ...