Miners here say hundreds of families from various regions in the province have come to the area since last year.
The World Health Organization (WHO) says malaria threatens 2.2 billion people in 20 countries across the Asia Pacific region.
Eight-year-old Nan Kini remains in the hospital, after his heart was repaired recently at a hospital in Siem Reap. He is frail, but he is alive.
Keo Sam is now an honored clinical psychologist working for the county of Los Angeles.
“Approximately 100,000 children in Cambodia are suffering from congenital heart defects,” says the founder of Hearts Without Borders.
At least 12 Cambodians were reported dead in Malaysia in 2011, nine of them housemaids and three of them factory workers.
A third victim dropped her complaint after receiving around $1,000.
Health officials said circulation of illegal medicines has dropped from 0.5 percent in 2010 to 0.18 percent in 2011.
Taing Tek Hong says while the rate of cure of hepatitis B is low, treating it is crucial to prevent cirrhosis and liver cancer.
There are six million people in the Asia Pacific living with HIV, about 15 percent of the world total.
Most H5N1 deaths have occurred in East and Southeast Asia, including China, Cambodia and Vietnam.
In 2002, as many as 13 percent of Cambodian blood donors tested positive for the antigen of the Hepatitis-B virus.