The guidelines acknowledge that overcrowding, unhygienic conditions and high inmate turn over contribute to the spread of infectious diseases within correctional facilities. The document states that voluntary HIV counselling and testing must be offered to all inmates when they enter facilities, during their incarceration at an inmate’s request and upon their release. All inmates must be screened for TB symptoms upon entry to facilities and at least bi-annually thereafter as well as upon release. Universal screening for anal, oral and genital STIs must be done at entry and upon self-presentation