Today in our running series on parasites, the topic will be the trematode or fluke, Clonorchis sinensis. Clonorchis sinensis, also known as the "Chinese liver fluke" or "Oriental liver fluke", is found only in Asia.

When clonorchiasis has been reported in non-endemic areas, the infection was found in Asian immigrants, or following ingestion of imported, undercooked or pickled freshwater fish containing metacercariae.

Joining me as always to lend her expertise in answering questions about Clonorchis is Parasitology teacher and author of Parasites: Tales of Humanity's Most Unwelcome Guests, Rosemary Drisdelle.