Etiology

Studies Cast Further Doubt On Precursor Virus To HIV Being Contained In Polio Vaccine

Published in AIDS Weekly, May 7th, 2001

New studies have cast more doubt on the idea that AIDS arose because an oral polio vaccine was contaminated with a precursor to the human immunodeficiency virus (HIV).

For years, there has been speculation that the polio vaccine was grown in chimpanzee kidney cell cultures that carried the precursor virus. The virus was then passed to people when the vaccine was administered in Africa in the late 1950s, the hypothesis holds.

But in the April 26, 2001, issue of the journal Nature, scientists in Britain and Sweden report that they found no chimp DNA in a stock of early polio vaccine used in Africa in the 1950s, challenging the hypothesized...

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Source: AIDS Weekly (2001-05-07)

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