Foodborne parasitic infections: Clonorchiasis and opisthorchiasis

Overview

Clonorchiasis is caused by the flatworm Clonorchis sinensis. Opisthorchiasis is caused by another flatworm Opisthorchis viverrini. Both infections are common among dogs and other fish-eating mammals (reservoir hosts) in endemic areas. C. sinensis and O. viverrini are classified as carcinogenic agents as they may cause bile duct cancer (cholangiocarcinoma).These foodborne trematodes are confined to Asia and associated with food habits and fish culture practices.

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