OpisthorchiasisOpisthorchisPraziquantelThailandFood ParasitologyAnthelminticsMekong ValleySchistosomicidesLaosAntibodies, HelminthAsiaAntigens, HelminthParasite Egg CountSchistosomiasis mansoniSchistosoma haematobiumSchistosomiasis haematobiaSchistosoma mansoniClonorchiasisOxamniquineSchistosomiasisAsia, SoutheasternAlbendazoleTrematode InfectionsPlatyhelminthsSchistosomiasis japonicaSchistosomaSchistosoma japonicumMethopreneAntiparasitic AgentsCestode InfectionsClonorchis sinensis