Actor Charlie Sheen is seen on the set of the NBC Today show prior to being interviewed by host Matt Lauer in the Manhattan borough of New York City, November 17, 2015. The former "Two and A Half Men" star said on Tuesday he is HIV positive. REUTERS/Mike Segar TPX IMAGES OF THE DAY

Mye Nyo (R), 39, is comforted by Thi Darwin, 23, at a Catholic-run hospice for AIDS patients in Myitkyina, the capital of Kachin State July 7, 2013. Both residents of the hospice were infected by their husbands, heroin addicts who died of AIDS. The wide availability of heroin in northern Myanmar is fueling the HIV epidemic, experts say. REUTERS/Damir Sagolj (MYANMAR - Tags: SOCIETY RELIGION DRUGS HEALTH) 

A nurse tests a blood sample during a free HIV test at a blood tests party, part of a campaign to prevent HIV infection among male same-sex couples, in Bangkok September 20, 2014. Bare-chested male models strutted through the glitzy ballroom in Bangkok to the beat of house music while dozens of young gay men waited anxiously, working up the nerve to have a blood test. The mostly female health team taking samples seemed incongruous next to the shirtless models circling the party, but the health workers' presence at the TestBKK event, Thailand's first mass HIV testing for gays, was sending a powerful message. Picture taken September 20, 2014. To match TRF Feature FOUNDATION-THAILAND/HIV REUTERS/Athit Perawongmetha (THAILAND - Tags: HEALTH SOCIETY) 

A HIV-positive woman holds AIDS awareness leaflets during an AIDS awareness drive inside brothels in the northeastern Indian city of Siliguri November 30, 2006. India has the largest number of people living with HIV/AIDS at 5.7 million, according to UNAIDS, and 85 percent of infections are transmitted through sex. REUTERS/Rupak De Chowdhuri (INDIA) 

A red ribbon is put on the sleeves of a man by his friend to show support for people living with HIV during a program to raise awareness about AIDS on World AIDS Day in Kathmandu December 1, 2013. World AIDS Day is observed annually on December 1. According to the Government of Nepal, Ministry of Health and Population, National Center for AIDS and STD Control, the estimated number of people living with HIV is around 48,600 in Nepal. REUTERS/Navesh Chitrakar (NEPAL - Tags: HEALTH SOCIETY) 

Academy award winner and HIV/AIDS campaigner U.S. actress Charlize Theron gets photographed for the Global Fund's Big Push campaign by the Global Economic Forum in Davos January 22, 2013. The Big Push is a campaign to fight AIDS, Tuberculosis and Malaria. The annual World Economic Forum (WEF) is held from January 23 to 27, 2013 in Davos. REUTERS/Pascal Lauener (SWITZERLAND - Tags: POLITICS BUSINESS ENTERTAINMENT) 

Raju Baral 27, who is HIV positive, shows a condom to his friends while counseling and sharing at the Care Support and Treatment Center run by Blue Diamond Society in Kathmandu June 23, 2011. The first ever shelter for ostracised gays has opened in Nepal -- a growing sign, say activists, that the impoverished, conservative Himalayan nation is becoming more aware of the rights of its gay population. Picture taken June 23, 2011. To match Reuters Life! NEPAL-GAYS/ REUTERS/Navesh Chitrakar (NEPAL - Tags: SOCIETY) 

A woman, with HIV, receives treatment at a HIV/AIDS hospice, founded by a member of the National League for Democracy (NLD) party, in the suburbs of Yangon December 1, 2013. World AIDS day is observed on December 1, 2013. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY HEALTH) 

Ncedeka Mbunye, 14, poses for a portrait while wearing a T-shirt indicating that she is HIV-positive in Cape Town's Khayelitsha township February 17, 2010. Some 5.5 million people live with HIV/AIDS in South Africa -- more than in any other country -- while 33 million people live with the disease worldwide. Brightly coloured T-shirts with the HIV-positive logo are distributed by the Treatment Action Campaign (TAC) and are intended to reduce the stigma attached to the disease. REUTERS/Finbarr O'Reilly (SOUTH AFRICA - Tags: HEALTH SOCIETY)