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

Understanding the differences between colds, flu, and RSV can help in identifying the illness you're dealing with, the ...

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

“In general, both spitting and swallowing are safe to do,” Parsons echoed. “Swallowing is harmless, because the stomach acid neutralizes any pathogens. Spitting out may feel better if the phlegm is ...

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