In 1999, Cambodia's HIV infection rate was the highest in Asia. An estimated 20,000 people have died of AIDS in Cambodia and 180,000 people are infected with HIV.
The country’s sex industry has contributed to the epidemic, as well as poverty and high work migration patterns.
Recent UN reports find that HIV is stabilizing for the first time in 25 years, but at the same time some countries are still slow in combating the epidemic.
Cambodia and Thailand experienced declines, but prevalence increased in China, Indonesia and Vietnam.
AIDS has killed more than 25 million people since it was first recognized in 1981. In 2003, the agency estimated 4.8 million were newly infected with the virus.