Sri Lanka remains one of the few countries in the region which maintains low epidemic levels even 25 years after the detection of the first HIV infected Sri Lankan in 1987. HIV prevalence appears to be below 1% even among the most at risk population such as sex workers and men having sex with men. The estimated number of people living with HIV at the end of 2009 was 3000 and the estimated prevalence among adults (15-49 years) is less than 0.1%. By end of 2011, 1463 cases were reported to NSACP with HIV infection. Male to female ratio has remained 1.5:1.