1. Opisthorchis felineus infection, risks, and morbidity in rural Western Siberia, Russian Federation
- Author
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Vyacheslav A. Petrov, Ekaterina A. Golovach, Yulia V. Kovshirina, Tatiana S. Sokolova, Olga Zvonareva, Jan Hattendorf, Ludmila M. Ogorodova, Uliana V. Konovalova, Sergey S. Gutor, M M Fedotova, Peter Odermatt, Anna E. Kovshirina, Sofia V. Mazeina, Ivan L. Kolomeets, O. S. Fedorova, RS: CAPHRI - R4 - Health Inequities and Societal Participation, and Metamedica
- Subjects
Male ,Rural Population ,0301 basic medicine ,Cross-sectional study ,diagnosis ,Flatworms ,RC955-962 ,Marine and Aquatic Sciences ,Opisthorchiasis ,Diagnostic Radiology ,0302 clinical medicine ,Risk Factors ,Arctic medicine. Tropical medicine ,Ultrasound Imaging ,Epidemiology ,Opisthorchis ,Medicine and Health Sciences ,Prevalence ,EPIDEMIOLOGY ,Child ,Eggs per gram ,Ultrasonography ,Aged, 80 and over ,medicine.diagnostic_test ,biology ,Radiology and Imaging ,Fishes ,Eukaryota ,Middle Aged ,Freshwater Fish ,Infectious Diseases ,Liver ,Helminth Infections ,Abdominal ultrasonography ,Vertebrates ,Female ,Anatomy ,Public aspects of medicine ,RA1-1270 ,Research Article ,Neglected Tropical Diseases ,Freshwater Environments ,Adult ,medicine.medical_specialty ,Adolescent ,Imaging Techniques ,030231 tropical medicine ,Research and Analysis Methods ,Trematodes ,Young Adult ,03 medical and health sciences ,Rivers ,Diagnostic Medicine ,Helminths ,Internal medicine ,Parasitic Diseases ,medicine ,viverrini ,Animals ,Humans ,Opisthorchis felineus ,Aged ,fish ,business.industry ,Ecology and Environmental Sciences ,Organisms ,Public Health, Environmental and Occupational Health ,Biology and Life Sciences ,Aquatic Environments ,Odds ratio ,Bodies of Water ,Tropical Diseases ,medicine.disease ,biology.organism_classification ,Invertebrates ,Health Care ,Siberia ,Cross-Sectional Studies ,030104 developmental biology ,FLUKES ,Bile Duct Neoplasms ,Biliary System ,Medical Risk Factors ,Multivariate Analysis ,Earth Sciences ,Bile Ducts ,Health Statistics ,Morbidity ,business ,Foodborne Trematodiases - Abstract
Background The liver fluke, Opisthorchis felineus, is widely distributed throughout Europe and large parts of the Russian Federation. In Western Siberia, information about opisthorchiasis is lacking although infection may lead to severe liver and bile duct diseases. We aimed to assess the current prevalence of O. felineus infection along with associated risk factors and morbidity in rural Western Siberia. Methods We conducted a community-based, cross-sectional study in the rural Shegarskiy district, Tomsk Oblast, Russian Federation. All household members (≥ 7 years) present on the survey day were enrolled (n = 600). Two stool samples per person were examined for helminth eggs, using PARASEP (DiaSys Ltd, UK). The number of eggs per gram (EPG) of feces was recorded. Each study participant was interviewed to determine risk factors, using a pre-tested questionnaire. An abdominal ultrasonography examination of liver and bile ducts was performed with a mobile, high resolution ultrasound device. In total, 488 persons completed assessments (two stool samples, completed questionnaires); of those, 436 individuals had an ultrasonography (US) examination. Results We observed a prevalence of O. felineus infection of 60.2%. Significant risk factors for infection were the consumption of river fish (odds ratio from adjusted analysis [aOR] 2.4, 95% CI 1.52–3.95, p, Author summary Opisthorchis felineus is a trematode (liver fluke) that infects the hepatobiliary systems of humans in endemic regions. The infection may lead to severe liver and bile duct diseases, making it a public health issue in endemic communities like Western Siberia. Yet, little information is available from this region about its epidemiology. We aimed to assess the current prevalence of O. felineus infection along with associated risk factors and morbidity in one district in rural Western Siberia. We conducted a cross-sectional community-based study in the Shegarskiy district, Tomsk Oblast, Russian Federation. All household members (≥ 7 years) present on the survey day were enrolled (n = 600). Two stool samples per person were examined for helminth eggs. We interviewed study participants to determine risk factors using a questionnaire. An abdominal ultrasonography examination was performed to assess liver and bile duct pathology. In total, 488 persons completed assessments. We found a high O. felineus infection prevalence of 60.2%. Women and older study participants had a higher risk of infection. The consumption of river fish, particularly stock, smoked, frozen and raw fish; and fishing activities increased the risk of infection. Study participants with a higher socio-economic status had a lower risk of infection. The ultrasonography showed that participants with infection had an increased risk of gallbladder stones and bile duct pathologies. Our study provides valuable information about Opisthorchis infection prevalence, its risk factors and morbidity in rural Siberia. The results will be useful for developing a multidisciplinary, community-based control program against Opisthorchis infection in endemic regions.
- Published
- 2020