- Courtney Q. Shah
Scientists have debated the origins of the human immunodeficiency virus (HIV) and the acquired immunodeficiency syndrome (AIDS) since they first recognized them in 1981 when clusters of homosexual men in California and New York were found to have suppressed immune systems. Since then HIV has become pandemic, affecting all segments of the population in every corner of the globe. Scientists believe that the disease originated in Cameroon, where a related virus called simian immunodeficiency virus (SIV) has been found in chimpanzees. The theory is that SIV jumped from chimpanzees to humans sometime in the twentieth century. A retrospective study of preserved blood samples done in 1998 confirmed that the earliest known case of HIV was in a Congolese man who died in 1959.
AIDS was first labeled gay related immune deficiency GRID by the U S government s Centers for Disease Control and Prevention CDC The earliest studies in ...
A version of this article originally appeared in The Encyclopedia of African American History, 1896 to the Present.