Pants on Fire!
AIDS was transmitted to humans because "one guy" had sex with "a monkey" and then started "having sex with men."

Stacey Campfield on Thursday, January 26th, 2012 in an interview with Michelangelo Signorile on the Sirius satellite radio show “OutQ.”

Knoxville Republican says AIDS came from man having sex with a monkey then with other men

Of the many controversial claims state Sen. Stacey Campfield, R-Knoxville, made in an interview on satellite radio last week with a gay-rights advocate, none was more sensational than his assertion that AIDS in humans came from "one guy screwing a monkey, if I recall correctly, and then having sex with men."

This came about 12 minutes into an interview that ostensibly was about a bill Campfield has championed declaring that only sexuality involving "natural human reproduction" can be addressed in the state’s K-8 public-school classrooms. Campfield calls it a "Don’t Teach Gay" bill, but it’s been more commonly called the "Don’t Say Gay" bill. Critics say it could open the door to allowing anti-gay bullying and harassment and potentially prevent teachers and administrators from helping students properly deal with sexuality issues.

We’re working on a separate article to post on Sunday that will cover many of the other claims made by Campfield, who also serves as Tennessee campaign co-director for Newt Gingrich's presidential campaign. This item will explore Campfield's specific claim about AIDS entering the human population because "one guy" had sex with a monkey and then had sex with men.

Here's the pertinent exchange for this fact check:

CAMPFIELD: Most people realize that AIDS came from the homosexual community.

SIGNORILE: No, it did not. Do you know the history of AIDS?

CAMPFIELD: It was one guy screwing a monkey, if I recall correctly, and then having sex with men.

SIGNORILE: No, it was not one guy screwing a monkey. It was somebody in Africa. Do you know the history of AIDS? Because I can tell you in a minute? It was somebody in Africa who actually killed a monkey, because they eat the meat of many animals, as I’m sure you do, I’m sure you eat the meat of animals. And they ate the meat of a monkey and the blood, they chopped it up, and it got in a cut and that’s how AIDS then spread among heterosexuals all through Africa, and it is a pandemic around the world.

In the days since the interview, Campfield has done other interviews and put up posts on his blog, adding some caveats and qualifiers to some of his claims.

But in his blog posts, one of which he titled "More fun than a barrel of monkeys," Campfield stuck by his claim of cross-species simian-human sex as the origin of AIDS. He wrote: "The research on sex with a monkey being the first transmitter of AIDS has not been proven nor firmly dis proven (sic). It is one of about 5 theories I was able to find on the source of AIDS."

We figured that because the legendary "Scopes Monkey Trial" happened in our fair state -- about 80 miles southwest of Knoxville -- PolitiFact Tennessee should examine this theory of evolution.

Consequence of hunting

Signorile had recently interviewed infectious disease specialist and epidemiologist Dr. Jacques Pepin, author of the recently published book, The Origin of AIDS, and Signorile accurately characterized Pepin’s research.

Pepin gave PolitiFact Tennessee an even more precise account. Pepin’s research, which relies on meticulous peer-reviewed studies that include DNA evidence going back decades, concludes that HIV in humans originated in Central Africa, likely sometime in 1921, from a hunter who was exposed to contaminated blood from an ape -- perhaps a chimpanzee -- that was killed for food.

A slow dissemination through Africa followed, Pepin said, through heterosexual transmission, needle injections and blood transfusions. It stayed at a "low level," he says, until 1966 or 1967 when it "was exported to Haiti" and "from there to the United States, probably at the beginning of the 1970s." Pepin agrees with Campfield on one point: that its spread in North America accelerated through infections transmitted in unprotected sex among gay men.

Apes, not monkeys

We also talked to Beatrice Hahn, a former longtime University of Alabama-Birmingham professor of medicine and microbiology now at the University of Pennsylvania and co-author of a 2010 research paper, "Origin of HIV and AIDS Pandemic." She clued us into a key distinction -- a monkey is not an ape and an ape is not a monkey. But they are both simians, the animal classification for what are known as "higher primates."

She has concluded that the form of HIV most prevalent around the world, known as HIV-1 Group M, originated in chimpanzees -- and chimps are considered apes, not monkeys. Figure 1 in her paper, which cites studies from 150 research papers and was written with Penn colleague Paul Sharp (formerly of University of Edinburgh) features pictures of 10 kinds of simians and has arrows showing how SIV -- "simian immuno deficiency virus" -- made a path to humans in two major forms, HIV-1 and HIV-2.

Hahn said HIV-1, the most common AIDS virus, has been documented to have emerged following "four independent transmissions of ape viruses -- not monkey viruses."

A second human AIDS virus that is largely restricted to West Africa is called HIV-2, and it is declining and being replaced by HIV-1, according to the paper. That less prevalent form has been traced to a monkey called the Sooty mangabey.

Hahn says the mostly likely way that the simian precursors of HIV-1 and HIV-2 entered the human population was from bushmeat hunters who killed simians for their meat. Pepin and other researchers have written the same thing, and we found no serious academic papers mentioning simian-human sex as a possible transmission route.

"Human infection," wrote Martine Peeters of the retrovirus laboratory of the Institute of Research for Development in Montpelier, France, "is thought to have resulted from cutaneous or mucous membrane exposure to infected blood during the hunting and butchering of chimpanzees and Sooty mangabeys for food. Bites from pet animals and possibly contact with fecal and urine samples may have also been involved."

Pepin’s book covers the same territory in great detail and cites many studies.

Hahn has appeared on panels with renowned primatologist Jane Goodall to discuss the dangers bushmeat hunting poses. Not only does it endanger species of simians like chimpanzees, there is concern the practice could some day lead to other simian viruses getting passed to humans to create a new pandemic. Scientists remain unsure why SIV does not lead to AIDS in some simians, while HIV causes a deadly condition in humans.

Our ruling

Campfield is unable to provide any convincing evidence to back up his claim and we could find none. The overwhelming scientific research shows Campfield is wrong. Experts believe HIV entered the human population through so-called "bushmeat" hunting, and, furthermore, that the predominant HIV-1 form has never been shown to be transmitted directly from monkeys to humans.

Hahn emphasized, too, that there is zero evidence to support the cross-species sex Campfield proposes: "It surely wasn’t transmitted through sexual activity (with simians)."

We rate the claim Pants on Fire.