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Impact of Male Circumcision on the HIV Epidemic in Papua New Guinea: A Country with Extensive Foreskin Cutting Practices

Author

Listed:
  • Richard T Gray
  • Andrew Vallely
  • David P Wilson
  • John Kaldor
  • David MacLaren
  • Angela Kelly-Hanku
  • Peter Siba
  • John M Murray
  • on behalf of the Male Circumcision Acceptability and Impact Study (MCAIS) team

Abstract

The degree to which adult medical male circumcision (MC) programs can reduce new HIV infections in a moderate HIV prevalence country like Papua New Guinea (PNG) are uncertain especially given the widespread prevalence of longitudinal foreskin cuts among adult males. We estimated the likely impact of a medical MC intervention in PNG using a mathematical model of HIV transmission. The model was age-structured and incorporated separate components for sex, rural/urban, men who have sex with men and female sex workers. Country-specific data of the prevalence of foreskin cuts, sexually transmitted infections, condom usage, and the acceptability of MC were obtained by our group through related studies. If longitudinal foreskin cutting has a protective efficacy of 20% compared to 60% for MC, then providing MC to 20% of uncut males from 2012 would require 376,000 procedures, avert 7,900 HIV infections by 2032, and require 143 MC per averted infection. Targeting uncut urban youths would achieve the most cost effective returns of 54 MC per HIV infection averted. These numbers of MC required to avert an HIV infection change little even with coverage up to 80% of men. The greater the protective efficacy of longitudinal foreskin cuts against HIV acquisition, the less impact MC interventions will have. Dependent on this efficacy, increasing condom use could have a much greater impact with a 10 percentage point increase averting 18,400 infections over this same period. MC programs could be effective in reducing HIV infections in PNG, particularly in high prevalence populations. However the overall impact is highly dependent on the protective efficacy of existing longitudinal foreskin cutting in preventing HIV.

Suggested Citation

  • Richard T Gray & Andrew Vallely & David P Wilson & John Kaldor & David MacLaren & Angela Kelly-Hanku & Peter Siba & John M Murray & on behalf of the Male Circumcision Acceptability and Impact Study (M, 2014. "Impact of Male Circumcision on the HIV Epidemic in Papua New Guinea: A Country with Extensive Foreskin Cutting Practices," PLOS ONE, Public Library of Science, vol. 9(8), pages 1-9, August.
    • Handle: RePEc:plo:pone00:0104531
    DOI: 10.1371/journal.pone.0104531
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    References listed on IDEAS

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    1. Bertran Auvert & Dirk Taljaard & Emmanuel Lagarde & Joëlle Sobngwi-Tambekou & Rémi Sitta & Adrian Puren, 2005. "Randomized, Controlled Intervention Trial of Male Circumcision for Reduction of HIV Infection Risk: The ANRS 1265 Trial," PLOS Medicine, Public Library of Science, vol. 2(11), pages 1-1, October.
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