Although fi shborne zoonotic trematodes that infect the
liver are well documented in Vietnam, intestinal fi shborne
zoonotic trematodes are unreported. Recent discoveries of
the metacercarial stage of these fl ukes in wild and farmed
fi sh prompted an assessment of their risk to a community
that eats raw fi sh. 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 specifi c
identifi cation. The liver trematode Clonorchis sinensis was
recovered from 51.5%, but >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 fi shborne intestinal
parasites are an unrecognized food safety risk in a country
whose people have a strong tradition of eating raw fi sh