Infectious Diseases

Caused by bacteria, viruses, fungi, and other organisms, infectious diseases range from mild to life-threatening. They can be spread from person to person, transmitted by insects or animals, or picked up through contaminated food. Many can be prevented with vaccines.
A man lying down on a sofa, sleeping
Norovirus Outbreaks Have Increased to Pre-Pandemic Levels, CDC Data Show
Monkeypox virus particle
Monkeypox Has the Potential to Mutate and Resist Antiviral Treatment, FDA Warns
Monkeypox virus
First U.S. Monkeypox Death Confirmed in Los Angeles—Here's How the Disease Can Be Fatal