Bacteria and viruses are the most common causes of disease, but they have some key differences. Here's what you need to know.

Understanding the differences between bacteria and viruses is crucial for recognizing how these microorganisms impact our health. While both are microscopic and can cause infections, they differ ...

FILE - A vial of a measles, mumps and rubella vaccine sits on a countertop at a pediatrics clinic in Greenbrae, Calif., on Feb. 6, 2015. (AP Photo/Eric Risberg, File ...

As the winter season continues, there's an increased chance of infections from COVID-19, influenza and respiratory syncytial virus. But, the U.S. Centers for Disease Control and Prevention predicted ...

Flu, COVID-19, the common cold and RSV have similarities, but they differ in their severity, contagiousness and symptoms.

(AP) - The world’s deadliest animal can be squashed flat with a quick slap: It’s the mosquito. The buzzing insects are more than annoying — they spread disease. When they bite and drink blood from a ...

The mosquito is the world’s deadliest animal, and dangerous infections have been in U.S. headlines this summer. The most common mosquito-borne viruses in the U.S. are West Nile and EEE, though an ...