Ash (1997), Sun(1999)
30 million people in southeastern Asia alone, and more
than 50 million worldwide are infected with Opisthorchiasis.
Image taken from the Atlas of Medical Parasitology
O. viverrini parasitizes Thailand, Lao People's Democratic Republic,
O. felineus parasitizes South, Central, and Eastern Europe,
Turkey, and the former USSR
There is potential for Opisthorchiasis infection in Equador as there
is a parasite known as Opisthorchis guayaquilensis reported in
humans and dogs.
In North America, the parasite Metorchis conjunctus, which is
also a member of the family Opisthorchiidae, occasionally infects
humans and is found in the bile ducts of dogs, cats, foxes, minks, and
raccoons. Humans are generally not infected, as they are unlikely to
consume the second intermediate host, which is the common suckerfish.