Reference summary — not medical advice or a personal risk estimate.
Opisthorchis viverrini
Group 1 — carcinogenic to humansInfectionsbiologicalEvidence: sufficient_in_humans
Summary
A liver fluke from undercooked freshwater fish in Southeast Asia. Associated with bile duct cancer.
Detail
Opisthorchis viverrini is Group 1 with sufficient evidence for cholangiocarcinoma (bile duct cancer). Infection comes from eating raw or undercooked freshwater fish carrying the larvae. Antiparasitic drugs treat infection.
Regional relevance
southeast_asia
regional
Sources
Primary sources
Consumer references
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- California Prop 65 list
State of California's list of chemicals known to cause cancer or reproductive harm.