Most of us at one time or another have had colds or the flu, and we are especially vulnerable during the cold and flu season. The symptoms -- fever, congestion, coughing, sore throat -- spread through offices, schools and homes, no matter where in the world we live....
What Viruses Really Do to Your Body It's emerging that viruses have far more lasting effects on the body than was believed only a few years ago. Find out about some common conditions that are now linked to viruses, and what you can do to stay healthy. Study...
Viruses lie around our environment all of the time just waiting for a host cell to come along. They can enter us through the nose, mouth or breaks in the skin (see How the Immune System Works for details). Once inside, they find a host cell to infect. For example,...
