Important note: Information in this article was accurate in 2005. The state of the art may have changed since the publication date.
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Agence France Presse (11.21.05) - Tuesday, December 06, 2005
Richard Ingham
In the new study, scientists tested the blood of three groups in Cameroon, each with a graduated exposure to bushmeat. The groups comprised 76 people in remote villages who hunted or butchered primates for food or trade or kept apes as pets; 66 people in the same villages who had low levels of such exposure; and 1,071 people who lived in urban and rural areas and were unlikely to have repeated contact with bushmeat blood or fluids.
The blood samples were tested for antibody reaction to SIV, a sign that an individual had been exposed to SIV, but not in itself an indicator of infection or disease.
The researchers found that in the high-exposure group, 17.1 tested positive; in the low-exposure group, this dropped to 7.8 percent; and in the general population group, the rate was 2.3 percent.
"Our data. offer new evidence that persons who hunt and butcher wild non-human primates are subject to ongoing exposure and potential infection with SIV," concluded the scientists, adding that heightened surveillance would help both to ensure a safe blood supply in Africa and to prevent the spread of "novel, emerging HIV infections." The authors noted that they could not assess the clinical risk from SIV exposure, mainly because almost no work has been done in this area.
According to Martine Peeters of the French Institute for Development Research, if different simian viruses mix in the same host, there is the risk they will swap genes and merge into a new, harmful form.
The study, "Central African Hunters Exposed to Simian Immunodeficiency Virus," was published in Emerging Infectious Diseases (2005;11(12):1928-1930).
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