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HIV has been around longer than we thought

A Star Tribune article announced that a new study in the journal Nature reports that HIV has been around since the early 1900s. It was previously thought that HIV, the virus that causes AIDS, first started infecting people around the 1930s, but it wasn't actually found in humans until 1981.

Two HIV samples were found in people in Kinshasa, Africa, in 1959 and 1960. These two samples were the only ones that have been discovered before 1976, which was a key discovery for the study.