4 doctors weighed in:
How did aids start?
4 doctors weighed in

Dr. Joel Gallant
Internal Medicine - Infectious Disease
3 doctors agree
In brief: Monkey blood
Most likely through contact with the blood of infected monkeys during the hunting and butchering process in africa.
In the latter half of the 20th century, improved transportation systems in africa allowed more travel within and outside of the continent, allowing it to spread beyond the small villages where it probably existed for decades before the actual aids pandemic began.

In brief: Monkey blood
Most likely through contact with the blood of infected monkeys during the hunting and butchering process in africa.
In the latter half of the 20th century, improved transportation systems in africa allowed more travel within and outside of the continent, allowing it to spread beyond the small villages where it probably existed for decades before the actual aids pandemic began.
Dr. Joel Gallant
Dr. Joel Gallant
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2 comments
Dr. Ed Friedlander
Dr. Gallant is correct once again! HIV1 is a mutated chimpanzee virus, with a genetic family tree that can be traced to the Congo near what is now Kinshasa in the early 20th century.
Dr. Pamela Pappas
Great question, and great answer.
Dr. Ed Friedlander
Pathology
In brief: Non-human primates
Molecular biologists devote their lives and scientific reputations to studying questions like this.
Hiv-1 is a chimp virus that jumped to humankind in the congo around 1900, hiv-2 from a sooty mangabey in western africa. Social changes, increased mobility, changing mores and population displacements allowed these to become epidemic. No reasonable, truthful source doubts this nowadays.

In brief: Non-human primates
Molecular biologists devote their lives and scientific reputations to studying questions like this.
Hiv-1 is a chimp virus that jumped to humankind in the congo around 1900, hiv-2 from a sooty mangabey in western africa. Social changes, increased mobility, changing mores and population displacements allowed these to become epidemic. No reasonable, truthful source doubts this nowadays.
Dr. Ed Friedlander
Dr. Ed Friedlander
Thank
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