AIDS
Human Immunodeficiency Virus, or HIV, is the infectious disease that causes the attained immunodeficiency syndrome known as AIDS. There are two known types of HIV: HIV-1, which is the main cause of AIDS all around the world, and HIV-2, which is found mainly in West Africa. ... There is no known cure for AIDS, but there are several drugs used to contain the replication of HIV, in a process called antiretroviral therapy. ... The cause of AIDS was finally discovered by scientists in 1983.