African hunters
The fact is that, presumably, HIV entered the human population, overcoming the species barrier, between 1910 and 1950 (most likely in the 1930s), and then African hunters became its carriers. The first documented human case of HIV infection was found to be in a man who died in the Belgian Congo in 1959. With the development of transport communications, the virus has penetrated other continents and more civilized countries of the world.
As for hunters from Africa, as Nikolai Belgesov, Sergey Romanenko and other authors of the textbook “Infectious Diseases” write, they contracted HIV from monkeys due to the fact that they ate their meat for food. There is also a version that this could happen during the butchering of carcasses, when infected monkey blood entered the human body, for example, through an open wound. It is less likely that the virus was transmitted to one of the hunters through a bite.