People gather around lit candles to mark the upcoming World AIDS Day in Kathmandu November 30, 2011. World AIDS Day, which falls on December 1, 2011, aims to raise awareness to tackle the prejudice towards HIV-infected people and help stop its spread. REUTERS/Navesh Chitrakar (NEPAL - Tags: SOCIETY ANNIVERSARY HEALTH TPX IMAGES OF THE DAY) 

The Christ the Redeemer statue is lit up in red atop the Corcovado mountain during a World AIDS Day event in Rio de Janeiro December 1, 2011. A total of 10 monuments including Christ the Redeemer will be lit up for three days as part of an AIDS campaign. REUTERS/Ricardo Moraes (BRAZIL - Tags: HEALTH SOCIETY TRAVEL EDUCATION) 

An infant receives medication at Nkosi's Haven, south of Johannesburg November 25, 2011. Nkosi's Haven provides residential care for destitute HIV-positive mothers and their children, whether HIV-positive or not. Nkosi's Haven is named after Nkosi Johnson, the young AIDS activist who passed away on International Children's Day on June 1st 2001. December 1 is World AIDS Day. Picture taken November 25, 2011. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: HEALTH SOCIETY) 

People stand around an AIDS ribbon formed from candles to commemorate World AIDS day in Guatemala City, December 1, 2011. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: HEALTH ANNIVERSARY SOCIETY) 

People stand near red ribbon structures erected at the El Salvador del Mundo (The Saviour of the World) statue on World AIDS Day in San Salvador December 1, 2011. REUTERS/Luis Galdamez (EL SALVADOR - Tags: HEALTH) 

A nurse takes blood for a free HIV test, during an HIV/AIDS awareness rally on World AIDS Day in San Salvador December 1, 2011. REUTERS/Luis Galdamez (EL SALVADOR - Tags: HEALTH) 

Prince Albert II of Monaco (L) and his wife Princess Charlene pose before an auction for Princess Stephanie's foundation, Fight Aids Monaco, on World AIDS Day in Monaco December 1, 2011. REUTERS/Eric Gaillard (MONACO - Tags: ROYALS ENTERTAINMENT HEALTH) 

Two men stand in front of Buenos Aires' Obelisk during an HIV/AIDS awareness rally on World AIDS Day, December 1, 2011. The banner that hungs on the Obelisk reads, "No more kids with HIV". REUTERS/Marcos Brindicci (ARGENTINA - Tags: SOCIETY HEALTH) 

People dressed as condoms give out pamphlets during an AIDS and HIV prevention campaign marking the World AIDS Day in Lima December 1, 2011. REUTERS/Pilar Olivares (PERU - Tags: SOCIETY HEALTH) 

Volunteers form a red ribbon during a HIV/AIDS awareness campaign in front of historic Taj Mahal on World AIDS Day in the northern Indian city of Agra December 1, 2011. REUTERS/Brijesh Singh (INDIA - Tags: SOCIETY HEALTH ANNIVERSARY) 

Members of Filhos da Dita Theatre perform during World AIDS Day in downtown Sao Paulo December 1, 2011. Every year the theatre performs and distributes condoms to the audience to raise awareness on the importance of HIV/AIDS prevention and to educate the public on the stigmatisation of HIV-positive and AIDS victims, according to its members. REUTERS/Nacho Doce (BRAZIL - Tags: ANNIVERSARY HEALTH SOCIETY) 

A member of the Filhos da Dita Theatre is reflected in the rear view mirror of a motorcycle as he distributes condoms to people during World AIDS Day in downtown Sao Paulo December 1, 2011. Every year the theatre performs and distributes condoms to the audience to raise awareness on the importance of HIV/AIDS prevention and to educate the public on the stigmatisation of HIV-positive and AIDS victims, according to its members. REUTERS/Nacho Doce (BRAZIL - Tags: ANNIVERSARY HEALTH SOCIETY) 

A nurse is seen through a door as she talks to an infected patient in the HIV/AIDS ward of Beijing YouAn Hospital December 1, 2011. The number of new HIV/AIDS cases in China is soaring, state media said on Wednesday, citing health officials, with rates of infections among college students and older men rising. The Chinese Center for Disease Control and Prevention issued figures showing 48,000 new cases in China in 2011, the official Xinhua news agency said. China's government was initially slow to acknowledge the problem of HIV/AIDS in the 1990s and had sought to cover it up when hundreds of thousands of impoverished farmers in rural Henan province became infected through botched blood-selling schemes. World AIDS Day is on December 1. REUTERS/David Gray (CHINA - Tags: HEALTH ANNIVERSARY) 

Pov Sophary, 28, a HIV positive patient rests at the Khmer-Soviet Hospital in Phnom Penh November 29, 2011. People around the world will observe World AIDS Day on December 1, 2011. REUTERS/Samrang Pring (CAMBODIA - Tags: SOCIETY HEALTH) 

A child looks up while walking past the symbol of a ribbon to mark the upcoming World Aids Day in Kathmandu November 30, 2011. World AIDS Day, which falls on December 1, 2011, aims to raise awareness to tackle the prejudice towards HIV-infected people and help stop its spread. REUTERS/Navesh Chitrakar (NEPAL - Tags: HEALTH) 

Prum Chhorn, 58, a HIV positive patient, rests at the Khmer-Soviet Hospital in Phnom Penh November 29, 2011. People around the world will observe World AIDS Day on December 1, 2011. REUTERS/Samrang Pring (CAMBODIA - Tags: SOCIETY HEALTH) 

Reshma (R), 18, and Pari, 25, both sex workers, prepare for a performance in Mumbai's Kamathipura red light district December 1, 2011. Social Activities Integration, a non-profit organisation which provides free condoms and medical care to people living with HIV and AIDS, held a commemoration for sex workers who died from AIDS on the eve of world AIDS day. REUTERS/Vivek Prakash (INDIA - Tags: SOCIETY ANNIVERSARY HEALTH) 

Medical students form a red ribbon, the symbol of the worldwide campaign against AIDS, during an HIV/AIDS awareness rally on World AIDS Day in central Istanbul December 1, 2011. REUTERS/Murad Sezer (TURKEY - Tags: HEALTH SOCIETY) 

A terminally ill man rests on a bed at a hospice for those dying from AIDS, at Wat Prabat Nampu Buddhist temple in Lopburi province on World AIDS day December 1, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: HEALTH SOCIETY) 

A woman pins a red ribbon on her shawl after participating in a rally to mark World AIDS Day in Kathmandu December 1, 2011. People participated in rallies and various programs all over Nepal to raise awareness to tackle the prejudice towards HIV-infected people and help stop the spread of the disease. REUTERS/Navesh Chitrakar (NEPAL - Tags: HEALTH ANNIVERSARY) 

The sails of the Sydney Opera House turn red during a World Aids Day reception in Sydney December 1, 2011. REUTERS/Tim Wimborne (AUSTRALIA - Tags: HEALTH CITYSPACE) 

A nurse prepares medicine at the HIV/AIDS ward of Beijing YouAn Hospital December 1, 2011. The number of new HIV/AIDS cases in China is soaring, state media said on Wednesday, citing health officials, with rates of infections among college students and older men rising. The Chinese Center for Disease Control and Prevention issued figures showing 48,000 new cases in China in 2011, the official Xinhua news agency said. China's government was initially slow to acknowledge the problem of HIV/AIDS in the 1990s and had sought to cover it up when hundreds of thousands of impoverished farmers in rural Henan province became infected through botched blood-selling schemes. World AIDS Day is on December 1. REUTERS/David Gray (CHINA - Tags: HEALTH ANNIVERSARY) 

A member of the Population and Community Development Association, wearing a costume made of condoms, blows a condom during a march marking World AIDS Day in Pattaya, 150 km (93 miles) east of Bangkok December 1, 2011. REUTERS/Chaiwat Subprasom (THAILAND - Tags: HEALTH ANNIVERSARY TPX IMAGES OF THE DAY) 

A girl who lost her mother to HIV/AIDS looks out the window at Nkosi's Haven, south of Johannesburg November 25, 2011. Nkosi's Haven provides residential care for destitute HIV-positive mothers and their children, whether HIV-positive or not. Nkosi's Haven is named after Nkosi Johnson, the young AIDS activist who passed away on International Children's Day on June 1st 2001. December 1 is World AIDS Day. Picture taken November 25, 2011. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: HEALTH SOCIETY) 

Prum Chhorn, 58, a HIV positive patient, rests at the Khmer-Soviet Hospital in Phnom Penh November 29, 2011. People around the world will observe World AIDS Day on December 1, 2011. REUTERS/Samrang Pring (CAMBODIA - Tags: SOCIETY HEALTH) 

Medical students form a red ribbon, the symbol of the worldwide campaign against AIDS, during an HIV/AIDS awareness rally on World AIDS Day in central Istanbul December 1, 2011.REUTERS/Murad Sezer (TURKEY SOCIETY - Tags: HEALTH ANNIVERSARY) 

A patient eats a dose of generic HIV/AIDS drugs at a hospice for those dying of AIDS, at Wat Prabat Nampu Buddhist temple in Lopburi province on World AIDS Day December 1, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: HEALTH SOCIETY) 

A hand of a child is seen as he blocks the wind to prevent the candle from dousing while lighting it to mark the upcoming World Aids Day in Kathmandu November 30, 2011. World AIDS Day, which falls on December 1, 2011, aims to raise awareness to tackle the prejudice towards HIV-infected people and help stop its spread. REUTERS/Navesh Chitrakar (NEPAL - Tags: HEALTH) 

U.S. President Barack Obama delivers remarks at a World AIDS Day event at George Washington University in Washington December 1, 2011.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: HEALTH POLITICS TPX IMAGES OF THE DAY) 

British musician Elton John poses before he cuts a ribbon as the Sydney Opera House sails turn red behind him at a World Aids Day reception in Sydney December 1, 2011. REUTERS/Tim Wimborne (AUSTRALIA - Tags: HEALTH ENTERTAINMENT POLITICS) 

British musician Elton John poses in front of the Sydney Opera House as its sails turn red at a World Aids Day reception in Sydney December 1, 2011. REUTERS/Tim Wimborne (AUSTRALIA - Tags: HEALTH ENTERTAINMENT POLITICS) 

British musician Elton John gestures while making a speech at a World Aids Day reception in Sydney December 1, 2011. REUTERS/Tim Wimborne (AUSTRALIA - Tags: HEALTH ENTERTAINMENT POLITICS) 

Former U.S. President George W. Bush (2nd R) and Tanzanian President Jakaya Kikwete pose for photographs with HIV/AIDS and cancer patients as they visit Ocean Road Cancer Institute in Dar es Salaam December 1, 2011. REUTERS/Emmanuel Kwitema (TANZANIA - Tags: HEALTH POLITICS SOCIETY) 

Former U.S. President George W. Bush and his wife Laura Bush arrive at Mnazi Mmoja Hospital to see the government efforts in the prevention of transmission of HIV/AIDS in Tanzania's capital Dar es Salaam December 1st, 2011. REUTERS/Emmanuel Kwitema (TANZANIA - Tags: HEALTH POLITICS) 

Singer Bono listens to U.S. President Barack Obama speak at a World AIDS Day event at George Washington University in Washington December 1, 2011.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: ENTERTAINMENT HEADSHOT POLITICS) 

Singer Alicia Keys listens as U.S. President Barack Obama delivers remarks at a World AIDS Day event at George Washington University in Washington December 1, 2011.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: ENTERTAINMENT POLITICS HEADSHOT PROFILE) 

Singer Alicia Keys meets U.S. President Barack Obama after he delivered remarks at a World AIDS Day event at George Washington University in Washington December 1, 2011.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: ENTERTAINMENT POLITICS) 

Singer Alicia Keys listens as U.S. President Barack Obama delivers remarks at a World AIDS Day event at George Washington University in Washington December 1, 2011.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: ENTERTAINMENT POLITICS HEADSHOT PROFILE) 

U.S. President Barack Obama greets singer Bono (L-R), Coca-Cola CEO Muhtar Kent and singer Alicia Keys after he delivered remarks at a World AIDS Day event at George Washington University in Washington December 1, 2011.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: ENTERTAINMENT BUSINESS POLITICS) 

Bun Rany, wife of Prime Minister Hun Sen and head of the Cambodian Red Cross (R), talks with a HIV-positive patient during a ceremony to commemorate World AIDS Day at a pagoda in Kandal province December 1, 2011. Bun Rany donated relief items to HIV-positive patients during the event. REUTERS/Samrang Pring (CAMBODIA - Tags: HEALTH ANNIVERSARY) 

Myanmar's pro-democracy leader Aung San Suu Kyi arrives for a ceremony to mark World AIDS Day at the National League for Democracy's head office in Yangon December 1, 2011. REUTERS/Soe Zeya Tun (MYANMAR - Tags: POLITICS HEALTH) 

Myanmar's pro-democracy leader Aung San Suu Kyi talks to HIV/AIDS patients during a ceremony to mark World AIDS Day at the National League for Democracy's head office in Yangon December 1, 2011. REUTERS/Soe Zeya Tun (MYANMAR - Tags: POLITICS HEALTH) 

Romanian volunteers hold their hands forming a red ribbon, the anti-AIDS symbol, during an awareness rally in central Bucharest November 29, 2011, two days before World AIDS day. REUTERS/Bogdan Cristel (ROMANIA - Tags: HEALTH SOCIETY) 

Pov Sophary, 28, HIV positive patient rests at the Khmer-Soviet Hospital in Phnom Penh November 29, 2011. People around the world will observe World AIDS Day on December 1, 2011. REUTERS/Samrang Pring (CAMBODIA - Tags: SOCIETY HEALTH) 

A boy is examined by a nurse at San Jose Hospice in Sacatepequez, about 45 km (27 miles) of Guatemala City, November 30, 2011. About 68 HIV-infected patients, between 44 days to 18 years old, receive free medical care at the hospice. Many of the children were found abandoned in markets, churches, fire stations, left neglected in hospitals or in some instances, brought in by their families who cannot afford to pay for their medical treatment. World AIDS day which falls on December 1 is commemorated across the world to raise awareness of the pandemic. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: HEALTH SOCIETY TPX IMAGES OF THE DAY) 

A terminally ill man receives treatment at a hospice for those dying of AIDS, at Wat Prabat Nampu Buddhist temple in Lopburi on World AIDS day December 1, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: HEALTH SOCIETY TPX IMAGES OF THE DAY) 

Raksha, 25, a sex worker, prepares for a performance in Mumbai's Kamathipura red light district December 1, 2011. Social Activities Integration, a non-profit organisation which provides free condoms and medical care to people living with HIV and AIDS, held a commemoration for sex workers who died from AIDS on the eve of world AIDS day. REUTERS/Vivek Prakash (INDIA - Tags: SOCIETY ANNIVERSARY HEALTH) 

A man has a sample of blood taken by a nurse for testing at the HIV/AIDS ward of Beijing YouAn Hospital December 1, 2011. The number of new HIV/AIDS cases in China is soaring, state media said on Wednesday, citing health officials, with rates of infections among college students and older men rising. The Chinese Center for Disease Control and Prevention issued figures showing 48,000 new cases in China in 2011, the official Xinhua news agency said. China's government was initially slow to acknowledge the problem of HIV/AIDS in the 1990s and had sought to cover it up when hundreds of thousands of impoverished farmers in rural Henan province became infected through botched blood-selling schemes. World Aids Day is on December 1. REUTERS/David Gray (CHINA - Tags: HEALTH ANNIVERSARY) 

Phat Sophorn 3, a HIV-positive patient, sits with his father during a ceremony to commemorate World AIDS Day at a pagoda in Kandal province December 1, 2011. Prime Minister Hun Sen's wife Bun Rany, who is also the head of the Cambodian Red Cross, donated relief items to HIV-positive patients during the event. REUTERS/Samrang Pring (CAMBODIA - Tags: HEALTH ANNIVERSARY) 

Chea Srean, 42, and her daughter Chhorn Thidapov, 5, HIV-positive patients, attend a ceremony to commemorate World AIDS Day at a pagoda in Kandal province December 1, 2011. Prime Minister Hun Sen's wife Bun Rany, who is also the head of the Cambodian Red Cross, donated relief items to HIV-positive patients during the event. REUTERS/Samrang Pring (CAMBODIA - Tags: HEALTH ANNIVERSARY) 

Pov Sophary, 28, a HIV positive patient, rests at the Khmer-Soviet Hospital in Phnom Penh November 29, 2011. People around the world will observe World AIDS Day on December 1, 2011. REUTERS/Samrang Pring (CAMBODIA - Tags: SOCIETY HEALTH) 

Sim Chandara, 41, a HIV-positive patient, attends a ceremony to commemorate World AIDS Day at a pagoda in Kandal province December 1, 2011. Prime Minister Hun Sen's wife Bun Rany, who is also the head of the Cambodian Red Cross, donated relief items to HIV-positive patients during the event. REUTERS/Samrang Pring (CAMBODIA - Tags: HEALTH ANNIVERSARY) 

A terminally ill man rests at a hospice for those dying of AIDS, at Wat Prabat Nampu Buddhist temple in Lopburi province on the World AIDS day December 1, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: SOCIETY HEALTH) 

A patient receives a dose of generic HIV/AIDS drugs at a hospice for those dying of AIDS, at Wat Prabat Nampu Buddhist temple in Lopburi province on World AIDS day December 1, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: HEALTH SOCIETY) 

Terminally ill men rest at a hospice for those dying of AIDS, at Wat Prabat Nampu Buddhist temple in Lopburi province on World AIDS day December 1, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: HEALTH SOCIETY) 

Syringes containing medicine for HIV-infected patients are seen at San Jose Hospice in Sacatepequez, about 45 km (27 miles) of Guatemala City, November 30, 2011. About 68 HIV-infected patients, between 44 days to 18 years old, receive free medical care at the hospice. Many of the children were found abandoned in markets, churches, fire stations, left neglected in hospitals or in some instances, brought in by their families who cannot afford to pay for their medical treatment. World AIDS day which falls on December 1 is commemorated across the world to raise awareness of the pandemic. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: HEALTH SOCIETY) 

A baby boy lies in a cot at San Jose Hospice in Sacatepequez, about 45 km (27 miles) of Guatemala City, November 30, 2011. About 68 HIV-infected patients, between 44 days to 18 years old, receive free medical care at the hospice. Many of the children were found abandoned in markets, churches, fire stations, left neglected in hospitals or in some instances, brought in by their families who cannot afford to pay for their medical treatment. World AIDS day which falls on December 1 is commemorated across the world to raise awareness of the pandemic. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: HEALTH SOCIETY) 

A nurse uses a syringe to give liquid medicine to a girl at San Jose Hospice in Sacatepequez, about 45 km (27 miles) of Guatemala City, November 30, 2011. About 68 HIV-infected patients, between 44 days to 18 years old, receive free medical care at the hospice. Many of the children were found abandoned in markets, churches, fire stations, left neglected in hospitals or in some instances, brought in by their families who cannot afford to pay for their medical treatment. World AIDS day which falls on December 1 is commemorated across the world to raise awareness of the pandemic. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: HEALTH SOCIETY) 

A boy receives medication at Nkosi's Haven, south of Johannesburg November 25, 2011. Nkosi's Haven provides residential care for destitute HIV-positive mothers and their children, whether HIV-positive or not. Nkosi's Haven is named after Nkosi Johnson, the young AIDS activist who passed away on International Children's Day on June 1st 2001. December 1 is World AIDS Day. Picture taken November 25, 2011. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: HEALTH SOCIETY) 

EDITORIAL USE ONLY - NO COMMERCIAL OR BOOK SALES. Nurse Maria Vatista draws blood for an HIV test from a Greek drug addict in a mobile HIV testing van in Omonia Square in Athens November 29, 2011. In the first five months of 2011, there were 384 new HIV cases in Greece -- an increase of more than 50 percent as compared to 2010. The United Nations' (UN) World AIDS Day is an occasion to honour victims of HIV and AIDS and to increase awareness of these conditions. It is held on December 1 each year. Picture taken November 29, 2011. REUTERS/Yannis Behrakis (GREECE - Tags: ANNIVERSARY DRUGS SOCIETY HEALTH)