Fishborne zoonotic intestinal trematodes, Vietnam.
Although fishborne zoonotic trematodes that infect the liver are well documented in Vietnam, intestinal fishborne zoonotic trematodes are unreported. Recent discoveries of the metacercarial stage of these flukes in wild and farmed fish prompted an assessment of their risk to a community that eats raw fish. A fecal survey of 615 persons showed a trematode egg prevalence of 64.9%. Infected persons were treated to expel liver and intestinal parasites for specific identification. The liver trematode Clonorchis sinensis was recovered from 51.5%, but > or =1 of 4 intestinal species of the family Heterophyidae was recovered from 100%. The most numerous were Haplorchis spp. (90.4% of all worms recovered). These results demonstrate that fishborne intestinal parasites are an unrecognized food safety risk in a country whose people have a strong tradition of eating raw fish.
Trung Dung
Do
D
National Institute of Malariology, Parasitology and Entomology, Hanoi, Vietnam.
Van De
Nguyen
N
Waikagul
Jitra
J
Dalsgaard
Anders
A
Chai
Jong-Yil
JY
Sohn
Woon-Mok
WM
Murrell
K Darwin
KD
D000328:Adult; D017677:Age Distribution; D000818:Animals; D003430:Cross-Sectional Studies; D005243:Feces / Q000469:parasitology; D005260:Female; D005393:Fish Diseases / Q000453:epidemiology / Q000469:parasitology* / Q000635:transmission*; D005399:Fishes / Q000469:parasitology*; D016266:Food Parasitology; D006801:Humans; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000469:parasitology / Q000635:transmission / Q000662:veterinary*; D008297:Male; D015995:Prevalence; D014200:Trematoda / Q000145:classification; D014201:Trematode Infections / Q000453:epidemiology / Q000635:transmission / Q000662:veterinary*; D014744:Vietnam / Q000453:epidemiology; D015047:Zoonoses / Q000453:epidemiology*