Fascioliasis is discussed separately. (See Liver flukes: Fascioliasis".)CLONORCHIS SINENSIS AND OPISTHORCHIS SPECIESEpidemiology ??? C. sinensis (or Opisthorchis sinensis), also known as the Chinese liver fluke, is endemic in the Far East, particularly in China, Japan, Taiwan, Vietnam, and Korea; it is also endemic in far eastern Russia [1,2].