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seasonal variation of opisthorchis viverrini infection in cyprinoid fish in north-east thailand: implications for parasite control and food safety.reported is the seasonal pattern of opisthorchis viverrini metacercariae in cyprinoid fish in north-east thailand. samples of fish were collected in 1991-92 at monthly intervals from two areas-khon kaen province, where the opisthorchiasis transmission rate was high, and mahasarakham province, where the rate was low. metacercarial loads in both study areas had similar seasonal patterns. high burdens occurred in the late rainy season and winter (july to january) with low burdens during the summer ...19979185364
a survey of metacercariae in cyprinoid fish in nakhon ratchasima, northeast thailand.metacercariae were recovered from freshwater fish taken from a stream in lum cha muak, nakhon ratchasima province, northeast thailand during the year 2000. seventy-nine cyprinoid fish comprising 3 species (52 puntius leiacanthus, 22 cyclocheilichthys armatus, and 5 hampla dispar) were collected. the prevalence of infection with metacercariae was 51.9%. only two genera of metacercariae were found: haplochinae spp and heterophyidae spp. haplochinae metacercariae were found in all 3 species of fish ...200212971487
distribution and abundance of opisthorchis viverrini metacercariae in cyprinid fish in northeastern thailand.to increase public health awareness for prevention of opisthorchiasis caused by eating raw freshwater fish, the distribution and abundance of opisthorchis viverrini metacercariae (ov mc) was investigated in freshwater fish obtained from 20 provinces in northeastern thailand between april 2011 and february 2012. a cross-sectional survey was conducted on 12,890 fish consisting of 13 species randomly caught from 26 rivers, 10 dams, and 38 ponds/lakes. fish, were collected in each of the rainy and w ...201324516277
a cross-sectional study on the potential transmission of the carcinogenic liver fluke opisthorchis viverrini and other fishborne zoonotic trematodes by aquaculture fish.throughout southeast asia and china, eating raw and or partially cooked cyprinid fish causes liver (hepatobiliary) disease and cancer (cholangiocarcinoma) due to fishborne zoonotic trematodes (fzt), in particular clonorchis sinensis and opisthorchis viverrini. the primary source of transmission is by native fish, but aquaculture fish are also reported to have high infective potential. here, a cross-sectional survey of fzt in fish farms was conducted in an endemic area in khon kaen province, thai ...201323320421
impact of temporal changes and host factors on the genetic structure of a population of opisthorchis viverrini sensu lato in khon kaen province (thailand).the population genetics of 317 individual opisthorchis viverrini from khon kaen province thailand, from 4 different years and 4 cyprinid fish species was examined using multilocus enzyme electrophoresis of enolase (enol), phosphoglucomutase (pgm) and triose phosphate isomerase (tpi). allele and genotype frequencies for enol and pgm were consistent irrespective of year or host species. no heterozygote deficiency was detected for enol. significant heterozygote deficiencies were detected in 3 of 4 ...200919523258
fishborne trematode metacercariae detected in freshwater fish from vientiane municipality and savannakhet province, lao pdr.freshwater fish from vientiane municipality and savannakhet province, lao pdr were examined by the muscle compression and artificial digestion methods to know the infection status with trematode metacercariae. in the fish from savannakhet, 2 species of metacercariae, opisthorchis viverrini and haplorchis taichui, were detected. o. viverrini metacercariae were found in 6 species of fish, puntius brevis, hampala dispar, esomus metallicus, mystacoleucus marginatus, puntioplites falcifer, and cycloc ...200819127332
motility of minute intestinal fluke, haplorchinae spp, metacercariae in fish dishes prepared by different uncooked methods.fish-borne trematode is a worldwide problem, with the number of people infected by liver flukes alone estimated at 21 million. in addition to the major liver flukes, opisthorchis viverrini and clonorchis sinensis, several types of intestinal flukes also use cyprinoid fish as the intermediate host. traditional ingestion of undercooked and uncooked fish preparations is a major factor in pathogen acquisition.200211965210
carcinogenic human liver fluke: current status of opisthorchis viverrini metacercariae in nakhon ratchasima, thailand.opisthorchis viverrini infection is a serious public-health problem in southeast asia. it is associated with a number of hepatobiliary diseases and the evidence strongly indicates that liver fluke infection is the etiology of cholangiocarcinoma.201222799311
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