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This is a timeline of HIV/AIDS, including but not limited to cases before 1980.
The examples and perspective in this Show heavy US bias, the global scope or Africa is barely mentioned may not represent a worldwide view of the subject. (April 2020) |
Researchers estimate that some time in the early 20th century, a form of Simian immunodeficiency virus found in chimpanzees (SIVcpz) first entered humans in Central Africa and began circulating in Léopoldville (modern-day Kinshasa) by the 1920s.[1][2][3] This gave rise to the pandemic form of HIV (HIV-1 group M); other zoonotic transmissions led to the other, less prevalent, subtypes of HIV.[3][4]
2012
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