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.
Sexually transmitted infections are caused by bacteria, viruses, and parasites that can spread through sexual contact.
Lymphedema is a condition in which fluid builds up in the soft tissues of the body. Learn about symptoms and treatment.
There are all sorts of ways to get an infectious disease—from people and animals, to eating contaminated foods, to environmental exposure.
Most microbes in and around our bodies are harmless, but some evolve to become deadly threats to individual and public health.