Malaria surveillance among the displaced Karen population in Thailand April 1984 to February 1989, Mae Sot, Thailand.

Right from the arrival of the displaced Karen people in Thailand, Médecins sans Frontières (MSF) identified malaria as the top priority problem. A program of patient care based on the coupled laboratory/dispensary was set up in April 1984. Immediately a system of surveillance of morbidity and mortality from malaria was set up.