Opisthorchis felineus and Metorchis bilis are the main agents of liver fluke infection of humans in Russia

Human liver flukes

“…An outbreak of 19 patients related to consumption of white sucker, prepared as sashimi has been reported (137) . Metorchis bilis is an important cause of human liver fluke infection in the Ob river basin of western Siberia, and has a similar presentation to Opisthorchis felineus (138) . Metorchis orientalis eggs have been found in the stool of 4·2% of the human population of Ping Yuan County of Guangdong Province, China and, although not identified in the biliary system of humans directly, has been identified in the biliary systems of local ducks, cats and dogs (139) .…”

The Liver Flukes: Clonorchis sinensis, Opisthorchis spp, and Metorchis spp.

“…The species reported from humans are M. conjunctus, M. bilis, M. orientalis, and M. taiwanensis. Because their overall prevalence and geographic distributions are limited compared to that of C. sinensis and Opisthorchis spp., there is comparatively little information on their epidemiology, health burden, and control (MasComa and Baruges, 1997;Chai et al, 2005;Furst et al, 2011;Mordvinov et al, 2012). For these reasons, species of the Metorchis genus will not be discussed further in this chapter.…”

“…Trematode parasites of the genera Clonorchis, Opisthorchis and Metorchis, commonly referred to as liver flukes, are transmitted to humans and other mammals by the ingestion of fish infected with their larval stages which ultimately come from snails infected due to excreta and polluted waters (Chai et al, 2005;Mordvinov et al, 2012;Petney et al, 2013). These zoonotic helminths are of public health concern because of the serious pathology they can induce in the liver and bile ducts (Sithithaworn et al, 2007a;Pakharukova and Mordvinov, 2016).…”

“…In Russia, Ukraine, and Kazakhstan, 12.5 million people have been considered to be at risk for O. felineus (Keiser and Utzinger, 2005). In these foci, both humans and domestic animals (cats and dogs) play the role as final hosts (Mordvinov et al, 2012). In the Tomsk region of Siberia, the prevalence of opisthorchiasis in humans increased from 495 cases per 100,000 inhabitants to 649 cases per 100,000 inhabitants between 1997 and 2006 (Mordvinov et al, 2012).…”

“…In these foci, both humans and domestic animals (cats and dogs) play the role as final hosts (Mordvinov et al, 2012). In the Tomsk region of Siberia, the prevalence of opisthorchiasis in humans increased from 495 cases per 100,000 inhabitants to 649 cases per 100,000 inhabitants between 1997 and 2006 (Mordvinov et al, 2012). Other endemic foci of O. felineus in Siberia are the Ob river and the Irtysh river basins.…”