An article by Leclerc P M & Garenne M in Int J STD AIDS. 2008 Oct;19(10):660-4. The study compares the association between buying sex and male HIV seroprevalence in Ghana, Kenya, Lesotho, Malawi and Rwanda. Given the relatively small proportion of men involved, the risk attributable to ‘ever paying for sex’ remained low suggesting that commercial sex seems may play a minor role in the spread of HIV in mature epidemics.