main species exist:
1) Clonorchis sinenis in China, Taiwan, Korea, Japan and Vietnam
carried by cats and dogs.
2) Opistriorchis felineus in Eastern Europe and carried by many
3) Opisthorchis viverrini in Thailand carried by dogs and cats.
Humans acquire the parasite after eating raw, dried, or pickled
fresh water fish. Millions of people are infected but only some
Symptoms include liver pain, fever, nausea, vomiting, and jaundice
can occur. Diagnosis is by eggs in the stool. An anti-worm medication
will cure this disease.