J. WaikagulMahidol University2018-07-042018-07-041998-06-01Southeast Asian Journal of Tropical Medicine and Public Health. Vol.29, No.2 (1998), 324-326012515622-s2.0-0032082825https://repository.li.mahidol.ac.th/handle/123456789/18521Examination for metacercaria in freshwater fish, the common intermediate hosts of Opisthorchis viverrini was carried out during 1992-1996. The 4-year survey of fish from markets in 14 provinces revealed that metacercariae of O. viverrini were found in fish from Udon Thani, Sa Kaeo and Prachin Buri Provinces; fish from Aranyaprathet district had the highest positive rates (25-28%). Fish from 12 provinces were found to be positive with heterophyid metacercariae, namely: Haplorchis pumilio, H. taichui, H. yokogawai, Stellantchasmus falcatus, Centrocestus for mosanus and Haplorchoides cahirinus. It was also observed that the prevalence of O. viverrini metacercaria in fish decreased markedly during the last 10 years.Mahidol UniversityMedicineArticleSCOPUS