21 July 2014
Last updated at 21:04 ET
Arrested for possession of a large amount of marijuana which he says he was safeguarding for a friend, Yogi, 39, is six years into a 14-year prison sentence in Bandung prison, Indonesia. A former drug user, he discovered that he was HIV positive when he was tested in the prison clinic.
More than a quarter of all prisoners in Indonesia have been found guilty of drugs offences. Faced with growing concern over HIV transmission among people who inject drugs, the Indonesian government has introduced more health-focused services.
Married with two children, Yogi took part in a training session organised by the prison when he was first diagnosed as HIV positive in order to learn more about living with the virus. He now shares his knowledge with other inmates and teaches them how to stay healthy in prison.
With the help of Rumah Cemara, a grassroots organisation set up by five former drug users to help others like them, the prison in Bandung is hoping to run an innovative clean-needle programme for prisoners later this year.
Yogi heads a group of prisoners who are determined to fight discrimination against HIV and to educate others about the risks. As a result of their efforts, around 30 inmates now take a voluntary HIV test every month.
HIV prevalence among prisoners who inject drugs in Indonesia has been estimated at around 8% for men and higher among women, compared with a prevalence rate of less than 0.5% in the general adult population.
Yogi was started on antiretroviral therapy (ART) by the prison doctor but, according to 2010 figures, only 6% of eligible people who inject drugs were receiving ART in Indonesia. In January 2012, only 200 prisoners were receiving antiretroviral therapy (ART).
Yogi is hoping to get a reduction on his sentence for his work with the peer educator programme and should only have two years left to serve. When he leaves prison he hopes to continue his work educating drug users about HIV and to use the skills he learned in prison to reduce stigma in society. Photography by Vincent Rumahloine for the International HIV/AIDS Alliance.