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AIDS Care
Psychological and Socio-medical Aspects of AIDS/HIV
Volume 18, 2006 - Issue 6
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Original Articles

Sexual risk factors associated with volunteering for HIV vaccine research in South Africa

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Pages 569-573 | Published online: 18 Jan 2007
 

Abstract

There are few data on how the risk profiles of individuals who volunteer for HIV vaccine research compare to the general population from which participants are recruited. This study contrasts demographic and sexual risk behaviours among volunteers in an HIV vaccine preparedness cohort with data from a cross-sectional community survey conducted in the same peri-urban community during the same time period. For the HIV vaccine preparedness cohort, structured questionnaires were administered to 140 HIV-negative individuals aged between 16 and 40 years. A questionnaire with identical measures was self-administered in a cross-sectional community survey of 583 randomly selected individuals within the same age range. Compared to the local community sample, individuals who volunteered for the HIV vaccine preparedness cohort were younger (adjusted odds ratio = 0.48; 95% CI = 0.28–0.82), more likely to have had a sexually transmitted disease (adjusted odds ratio = 1.75; 95% CI = 1.03–2.99) and less likely to use condoms (adjusted odds ratio = 0.51; 95% CI = 0.3–0.86). Cohort participants were also more likely to perceive themselves and their partners to be at risk of HIV infection, though these associations did not persist in multivariate analysis. These findings suggest that volunteers for vaccine-related research may be at greater risk of HIV infection than the general population from which they are recruited.

Acknowledgments

This research was supported by the South African AIDS Vaccine Initiative. The authors wish to thank: Prudence Mthimunye for her role in the recruitment, enrolment and interviewing of participants; Noliswe Malashe, Ayanda Mhlambiso, Phumla Madliwa and Skolweni Zelanga for their roles in interviewing; and Lububalo Vellem and Patricia Mhlambiso for assistance in translating the questionnaires and conducting of the pilot study.

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