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Brief Encounters
  1. Helen Ward,
  2. Nicola Low, Editor and Assistant Editor

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    WHY DO MSM GET MORE HIV?

    Many explanations have been put forward for the disproportionate burden of HIV in men who have sex with men (MSM) compared with heterosexuals in developed countries. Is it a higher rate of partner change, more dense sexual networks, high transmission probabilities or more concurrent STIs? Goodreau and Golden use a mathematical model to explore the potential impact of sexual role segregation in heterosexuals and the different transmission probabilities of anal and vaginal sex. They suggest that epidemics can occur in MSM at a lower rate of unprotected sex than that needed for heterosexuals.
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