I was so happy to hear it when the doctor said he was HIV negative," was the relieved reaction of Anya Nopalit, who recalls being told about her baby after learning that she was HIV positive during her pregnancy 16 years ago. Her story is one of many that underline the success Thailand has achieved in two decades of dedication to creating an Aids-free country. Over that time, the country has reduced the risk of mother-to-child transmission from 45% to 1.91%. Now other countries in the region are working to replicate Thailand's world-leading success.