O. viverrini infection-endemic villages in Kandal province are all
located 2–8 km from the main stream of the Bassak River. However,
residents generally catch freshwater fish for raw consumption from
lakes and/or the rainy season or year-round ponds that form near
their villages instead of from the Bassak.
In addition, villages in
Kampong Thom province are not near the Mekong River or the major
tributaries of the Bassak or Tonle Sap River. Two O. viverrini infectionendemic
villages found in 2012 were located about 80 km from the