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AIDS Denialism: Conspiracy Theories Can Kill

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This scanning electron micrograph from 1989 reveals HIV particles (colored green) emerging from an infected cell. Image: CDC’s C. Goldsmith, P. Feorino, E.L. Palmer, W.R. McManus

We’ve all heard various conspiracy theories; we may or may not find them credible, and we might chalk up opposing viewpoints to simple differences in opinion. Sometimes, however, conspiratorial narratives are woven around matters of life and death — and in such cases, the spread of such ideas can influence dangerous changes in behavior and even government policy.

AIDS denialism is based on the idea that human immunodeficiency virus (HIV) does not cause AIDS. Although the existence of HIV and its causal connection to AIDS has been thoroughly demonstrated by scientists, denialists either reject the existence of HIV altogether, or cast it as a harmless virus that doesn’t cause illness. Denialism often relies upon rhetorical strategies that are superficially convincing but intellectually hollow, including the cherry-picking of evidence, appeals to unreliable “experts,” and untestable claims. Denialists also might cite early AIDS research from the mid-1980s while ignoring more up-to-date findings and improved medical procedures. Such rhetoric creates a sense of legitimate debate in an area where there is none, and the only new evidence welcomed into the discourse is that which confirms preconceived notions.

Health decisions must be shaped by the best available evidence, and when denialism misinforms, one cannot make an informed decision.

If AIDS isn’t caused by HIV, what do denialists claim is behind the unique symptoms that characterize it? Some say that conditions such as malnutrition, or diseases that have been around for a long time, are simply being labeled as AIDS. Other denialists cast antiretroviral drugs as the cause, rather than the preventive treatment, of AIDS. Some claim that AIDS is caused by behavior, such as drug use or promiscuity — with some even saying that an accumulation of semen in the anus can cause AIDS. None of the claims is true — while AIDS can leave someone vulnerable to a wide variety of diseases, and while sharing IV equipment and engaging in unprotected sex can increase risk, there is only one cause: HIV. Continue reading →

Book Club: The Origins of AIDS

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The Origins of AIDS
By Jacques Pepin
Cambridge University Press, 2011

Most sexually transmitted diesases go back thousands of years. Gonorrhea, for example, was first described by a Greek physician in A.D. 150, and pubic lice have been evolving right along with us since before we became Homo sapiens. This might have been one reason why it was such a shock when a strange new virus came to our attention in the early 1980s. We soon discovered that it was transmitted sexually and through infected blood, but where did it come from?

We have intriguing evidence that HIV as we know it has been in existence since at least the 1930s.

HIV has been around since before the 1980s, though it remained unnoticed and unidentified by medical science. The earliest confirmed case of HIV was in 1959, the proof found in a sample of blood from the Belgian Congo, saved in a freezer for decades and later analyzed for the virus. Other early cases of HIV infection that have retrospectively been confirmed include that of a Norwegian sailor, who must have been infected while visiting African ports in the early 1960s. He, his wife, and his child (who was apparently congenitally infected) all died in 1976, and their tissues were tested 12 years later and found positive for HIV.

Jacques Pepin — a professor and microbiologist, not to be confused with the chef of the same name — does some serious detective work to find the most plausible explanation for HIV’s origins. While he doesn’t skimp on the science, the story of AIDS’ origins can’t be told without getting into the history of Europe’s colonization of Africa in the 20th century. This period, followed by the era of post-colonization, found many societies in upheaval. Urbanization, unemployment, and migration facilitated the spread of HIV in Africa during much of the 1900s, and once it left the continent it was able to hitch a ride from host to host, traveling the world. Continue reading →