Scientists' best guess is that the precursor of the most common "M" virus jumped from the Cameroon chimps to humans sometime before 1931.
https://www.pbs.org/wgbh/pages/frontline/aids/virus/origins....
Scientists' best guess is that the precursor of the most common "M" virus jumped from the Cameroon chimps to humans sometime before 1931.
https://www.pbs.org/wgbh/pages/frontline/aids/virus/origins....