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http://www.cdc.gov/correctionalhealth/ID_HIV.htm

Features "HIV in Prisons, 2004" report

Reports the number of female and male prisoners who were HIV positive or AIDS active, the number of AIDS-related deaths in State and Federal prisons, a profile of those inmates who died, and a comparison of AIDS rates for the general and prisoner populations.

I think that should do it or at least get you on your way.