Most microbes in and around our bodies are harmless, but some evolve to become deadly threats to individual and public health.
A type of bacterium, Clostridium difficile (C. diff), causes one of the most common health care-associated infections in the United States.
HIV is a retrovirus that impairs the immune system and causes AIDS. Learn about symptoms and treatment.
Condition marked by inflammation of the stomach and intestines.
Global health and travel-related maladies are a group of diseases that can pose a serious threat to people who have traveled to certain countries. Learn about symptoms and treatment.
A serious and potentially fatal disease caused by parasites that enter the body via mosquito bites. People with malaria typically experience fever, chills, headache, nausea, and fatigue.
There are all sorts of ways to get an infectious disease—from people and animals, to eating contaminated foods, to environmental exposure.
A virus that is transmitted to humans by the bite of infected ticks.
Vaccines aren’t just for kids. Thousands of adults go to the hospital each year for a serious (sometimes even deadly) disease they might have avoided if they had received the vaccination to prevent it.