In Zambia many people who might have died without HIV medicine are now feeling the impact of free treatment. The country's health programme is the result of years of campaigning at home and abroad.
Felix Mubanga is 29. He lives in Lusaka and is one of a new generation of Zambians living with HIV receiving free medical treatment for the virus.
Felix told Pamela Mnyantha why it was important to be the first person in his family to get HIV drugs, and how he handled the guilt of passing the virus onto his wife.