The first case of AIDS was identified in New York in 1979. The cause of the disease, a retro virus now called Human Immunodeficiency Virus, was identified in 1983-84 by scientists working at the National Cancer Institute in the United States and the Pasteur Institute in France. These workers also developed tests for AIDS, enabling researchers to follow the transmission of the virus and to study the origin and mechanism of the disease. Close relatives of …showed first 75 words of 1564 total…

…showed last 75 words of 1564 total…time has gone by and researchers have had time to monitor the progress of people infected with in recent years, we won't have any final answers. What is important to remember is that, even if an HIV-positive person never develops AIDS, he or she will always have the AIDS virus in his or her system for as long as he or she lives and will always be able to transmit the virus to other people.