almost 15 % of China 's 780,000 people are now over the age of 60 . Among new HIV-positive cases , people over 50 account for More than 10 % in 2009 . CNN has estimated 1.3 billion people will be living with the AIDS virus in China . Researchers : Cheap sex with prostitutes and lack of safe sex knowledge puts elderly at risk .
More than 10 % of China 's 1.3 billion people are now over the age of 60 . Among new HIV-positive cases , people over 50 account for almost 15 % in 2009 . United Nations has estimated 780,000 people will be living with the AIDS virus in China . Researchers : Cheap sex with prostitutes and lack of safe sex knowledge puts elderly at risk .