| eggshell morphology of the small eggs of human trematodes in thailand. | light and scanning electron micrographs of opisthorchis viverrini, haplorchis taichui, h. pumilio, a phaneropsolus bonnei, and prosthodendrium molenkampi eggs were studied. under light microscopy. o. viverrini eggs had rough eggshells and prominent shoulders. h. taichui, h. pumilio were similar in shape and had smooth eggshells and prominent shoulders. h. pumilio eggs were bigger than h. taichui eggs. p. bonnei and p. molenkampi eggs had smooth eggshells and indistinct shoulders. p. bonnei eggs ... | 1991 | 1820654 |
| studies on the life cycle of phaneropsolus bonnei and prosthodendrium molenkampi in thailand. | | 1973 | 4202641 |
| multi-infection with helminths in adults from northeast thailand as determined by post-treatment fecal examination of adult worms. | six hundred and eighty-one residents from 16 provinces in northeast thailand who had previously been found positive for opisthorchis viverrini and taenia spp. eggs were given 40 mg praziquantel (bayer, germany), per kg body weight. the total stool output for one to three days was collected and examined for adult worms. the prevalence of o. viverrini in this group was 92.4%. the intestinal flukes echinostoma malayanum, e. ilocanum and e. revolutum were found to be high in males, with 8.3%, 8.1% a ... | 1994 | 7939164 |
| opisthorchiasis and intestinal fluke infections in northern thailand. | four hundred and thirty-one residents from 16 provinces in northern thailand who had previously been found positive for opisthorchis viverrini or opisthorchis viverrini-like eggs were given praziquantel 40 mg/kg. the stool was collected for 4 to 6 times and examined for adult worms. the prevalence of opisthorchis viverrini in this group was 11.6%. intestinal flukes, haplorchis taichui and haplorchis yokogawai, were predominantly found in 63.11% and 10.44% respectively. other intestinal flukes (c ... | 1998 | 9740284 |
| mixed infections with opisthorchis viverrini and intestinal flukes in residents of vientiane municipality and saravane province in laos. | faecal examinations for helminth eggs were performed on 1869 people from two riverside localities, vientiane municipality and saravane province, along the mekong river, laos. to obtain adult flukes, 42 people positive for small trematode eggs (opisthorchis viverrini, heterophyid, or lecithodendriid eggs) were treated with a 20-30 mg kg(-1) single dose of praziquantel and purged. diarrhoeic stools were then collected from 36 people (18 in each area) and searched for helminth parasites using stere ... | 2005 | 16153322 |
| methylene blue staining method for identification of opisthorchis viverrini egg. | methylene blue staining method was used to distinguish o. viverrini eggs from haplorchis taichui and prosthodendrium molenkampi eggs. all eggs were obtained from dissected adult worms, fixed in 10% formalin, and stained with methylene blue prior to light microscopy observation. the distinct musk-melon-like texture of the o. viverini eggshell surface and the thread-like texture of h. taichui eggshell surface were recognized, while p. molenkampi eggs showed a smooth eggshell. we also evaluated the ... | 2005 | 16438191 |
| high prevalence of liver and intestinal fluke infections among residents of savannakhet province in laos. | the prevalence of liver and intestinal fluke infections was surveyed on residents of savannakhet province, laos. fecal specimens were collected from a total of 981 residents in 4 mekong riverside villages and examined by the kato-katz thick smear technique. the results revealed that the overall helminth egg positive rate was 84.2%, and the positive rate for small trematode eggs, including opisthorchis viverrini, heterophyids, or lecithodendriids, was 67.1%. to obtain adult flukes, 38 small trema ... | 2007 | 17876167 |
| diversity of human intestinal helminthiasis in lao pdr. | food-borne trematodiasis is an emerging public health problem, including in lao pdr. we investigated the diversity of intestinal helminthes and polyparasitism in patients with hepatobiliary or intestinal symptoms in hospital and community-based surveys. stool samples from 232 individuals aged >or=15 years were examined by the kato-katz method (three samples) and a formalin ethyl-acetate concentration technique (one sample). opisthorchis viverrini and minute intestinal flukes (mif) were common, w ... | 2009 | 19038411 |
| rare human infection with the trematode echinochasmus japonicus in lao pdr. | food-borne trematodiases are often neglected although millions of people are affected and these zoonotic diseases are emerging in some parts of the world. humans acquire an infection through consumption of the second intermediate hosts (e.g. freshwater fish) that harbour the metacercariae of the parasite. here, we report the first three cases of echinochasmus japonicus infection in lao pdr. adult e. japonicus flukes were recovered from a woman (age: 37 years) and two men (age: 42 and 75 years) f ... | 2009 | 19059359 |
| high prevalence of haplorchis taichui, phaneropsolus molenkampi, and other helminth infections among people in khammouane province, lao pdr. | the prevalence of liver and intestinal helminth infections, including opisthorchis, haplorchis, phaneropsolus, hookworms, enterobius, and taenia, was surveyed in khammouane province, lao pdr. fecal specimens were collected from 1,242 people (590 men and 652 women) in 3 mekong riverside villages and were examined by the kato-katz thick smear technique. the overall helminth egg positive rate was 81.1%. the positive rate for small trematode eggs, including opisthorchis viverrini, heterophyids, and ... | 2009 | 19724697 |
| hyperendemicity of haplorchis taichui infection among riparian people in saravane and champasak province, lao pdr. | in this study, we found that haplorchis taichui, a heterophyid intestinal fluke, is highly prevalent, with heavy worm loads, among riparian people in saravane and champasak province, lao pdr. fecal specimens were collected from 1,460 people (717 men and 743 women) in 12 riparian (mekong river) districts and were examined by the kato-katz fecal smear technique. the overall helminth egg positive rate was 78.8% and 66.4% in saravane and champasak province, respectively. the positive rate for small ... | 2013 | 23864741 |