https://en.wikipedia.org/wiki/HIV
ref - https://www.reddit.com/r/todayilearned/comments/cvw7ek/til_the_hiv_virus_first_mutated_and_came_to_be/
origin - https://www.pipiscrew.com/2019/08/the-hiv-virus-first-mutated-and-came-to-be-around-the-mid-30s-when-a-guy-from-africa-decided-to-have-sexual-intercourse-with-a-female-chimpanzee/ the-hiv-virus-first-mutated-and-came-to-be-around-the-mid-30s-when-a-guy-from-africa-decided-to-have-sexual-intercourse-with-a-female-chimpanzee