A chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV).

A mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches.

A common virus that causes sores on your genitals and/or mouth. Herpes can be annoying and painful, but it usually doesn't lead to serious health problems.

An inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body.

A group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body.