There are theories (conspiracy????) who suggest that HIV was actually made in a lab, and then someone was infected and then boom.
Other theories are that it comes from Monkeys.
Where did HIV come from? | The AIDS Institute
"Scientists identified a type of chimpanzee in West Africa as the source of HIV infection in humans. They believe that the chimpanzee version of the immunodeficiency virus (called simian immunodeficiency virus or SIV) most likely was transmitted to humans and mutated into HIV when humans hunted these chimpanzees for meat and came into contact with their infected blood. Over decades, the virus slowly spread across Africa and later into other parts of the world."
Origin of HIV & AIDS | AVERT
"There are two
types of HIV, known as HIV-1 and HIV-2, which have different origins and causes."
"
In 1999, a strain of SIV (called SIVcpz) was found in a chimpanzee that was almost identical to HIV in humans.
The researchers who discovered this connection concluded that it proved chimpanzees were the source of HIV-1, and that the virus had at some point crossed species from chimps to humans."
"The most commonly accepted theory is that of the 'hunter'. In this scenario, SIVcpz was transferred to humans as a result of chimps being killed and eaten, or their blood getting into cuts or wounds on the human hunter.
5 Normally, the hunter's body would have fought off SIV, but on a few occasions it adapted itself within its new human host and became HIV-1."
"HIV-2 comes from SIVsmm in sooty mangabey monkeys rather than chimpanzees.
7 The crossover to humans is believed to have happened in a similar way (through the butchering and consumption of monkey meat)."
"Their studies concluded that the first transmission of SIV to HIV in humans took place around 1920 in Kinshasa in the Democratic Republic of Congo (DR Congo).
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In the 1960s, the 'B' subtype of HIV-1 (a subtype of strain M) had made its way to Haiti. At this time, many Haitian professionals who were working in the colonial Democratic Republic of Congo during the 1960s returned to Haiti.
12 Initially, they were blamed for being responsible for the HIV epidemic, and suffered severe racism,
stigma and discrimination as a result.
HIV-1 subtype B is now the most geographically spread subtype of HIV internationally, with 75 million infections to date.
13"