Dechreuodd byrddau iechyd Cymru ddarparu cyffuriau PrEP (proffylacsis cyn-gysylltiad) ym mis Gorffennaf llynedd drwy glinigau iechyd rhywiol, fel rhan o astudiaeth dros dair blynedd. Gellir cynnig y feddyginiaeth gwrthretrofirol i bobl sydd heb eu heintio ond sydd mewn risg, er mwyn eu hatal rhag cael HIV.
Health boards in Wales started providing Pre-Exposure Prophylaxis (PrEP) in July last year through sexual health clinics as part of a three year study. The antiretroviral medication can be provided to at risk, uninfected people to prevent them getting HIV.