[Risk factors associated with human immunodeficiency virus in men deprived of their liberty in Merida, Yucatan, Mexico].

A case control study was conducted to know risk factors associated to HIV infection in Yucatan, Mexico jails. Repeated imprisonment, having more than eleven intercourses couples and having sex with other men were statistically related to HIV infection. Tattooing and intravenous drugs abuse were no significant risk factors.