ParagonimiasisParagonimusLung Diseases, ParasiticTrematode InfectionsParagonimus westermaniTrematodaLung DiseasesPraziquantelShellfishLung Diseases, InterstitialFood ParasitologyAntibodies, HelminthLaosLungAnthelminticsPleural EffusionMetacercariaeBrachyuraMissouriSuburban HealthHeterophyidaeFasciolaBithionolSnailsCentral Nervous System HelminthiasisParamphistomatidaeParasite Egg CountEchinostomaAstacoideaAntigens, HelminthClonorchiasisLung Diseases, ObstructiveEosinophiliaFasciola hepaticaBiomphalariaEchinostomiasisHelminthiasis, AnimalSputumSchistosoma mansoniCameroon