Sara Moniuszko is a health and lifestyle reporter at CBSNews.com. Previously, she wrote for USA Today, where she was selected to help launch the newspaper's wellness vertical. She now covers breaking ...

If there’s one positive that came out of the pandemic, it could be our heightened awareness of how viruses, particularly the respiratory kind, can spread from one person to another. The super-sick ...

Many infectious diseases are caused by viruses and bacteria. Bacteria are microorganisms that are made up of a single cell. They can be found in a wide variety of environments. Most bacteria are ...

When the flu strikes, one of the biggest concerns is how long you might be contagious. Knowing this can help protect your family, friends, and coworkers from catching the virus. This guide from ...

R 0, pronounced “R naught” or “R zero,” is a mathematical term that indicates how contagious an infectious disease is. It’s also referred to as the reproduction number. R 0 of 1 means an infection in ...