The Structure of Hepatitis C Virus Genotypes/Subtypes in Adult Patients with Chronic Hepatitis C in the Moscow Region

The structure of HCV genotypes/subtypes and dynamics of its changes in a cohort of adult patients with chronic hepatitis C (n = 17229) was studied during 2008-2015 in the Moscow region. The prevalence of subtypes 1b and 3A HCV, whose relative density have made 47.5% (95%CI 46.8 - 48.3%) and 39.4% (95% CI 38.7 - 40.2 per cent) respectively was revealed. The average proportion of subtype 1A HCV was 5.4% (95%CI of 5.1 - 5.8%) and genotype 2 - 7.2% (95% CI 6,8 - 7,6%). It was established that the dynamics of 1b subtype HCV relative density was characterized by a moderate decline rate of 1.3% per year, while the proportion of subtype 3A HCV increased (+2.9% per year). The differences in the ratio of subtypes 1b and 3A HCV were revealed when dividing the patients by gender. The subtype 1b HCV was more frequently identified in women during the observation period. In the cohort of male patients a shift of the leading HCV subtype was detected - since 2010, the 3A subtype HCV was identified with a higher frequency than subtype 1b HCV. It was shown that in patients under 30 years the proportion of subtype 3A HCV was higher than in the age group older than 30 years, regardless of gender.

генотипы/подтипы ВГС, тенденции многолетней динамики, genotypes/subtypes of HCV, the trend of long-term dynamics

1. Kosakowska I.I., Volchkova E.V. Medico-social aspects of viral hepatitides with the parenteral way of transmission. Epidemiology and infectious diseases. 2013; 1: 28 – 39 (in Russian).

2. Yushchuk N.D., Znoiko O.O., Acusacin N.A., Dudina K.R., Shutko S.A., Kozina A.R. et al. assessment of the socio-economic burden of hepatitis C in the Russian Federation. Epidemiology and Vaccinal Prevention. 2013; 2: 18 – 33 (in Russian).

3. Ignatova E.N., Yaroslavtseva N.G., Tupoleva T.A., Romanova T.Yu., Tikhomirov D.S., Filatov F.P. Research profile of the subtypes of hepatitis C virus in recipients of donor blood components. Epidemiology and infectious diseases. Current issues. 2015; 4: 39 – 43 (in Russian).

4. Kuzin S.N., Samokhvalov E. I., Zabotina E.E., Kudryavtseva E.N., Krel P.E., Korabelnikova, M. I., et al. The structure of hepatitis C virus genotypes in patients with chronic hepatitis C. J. Mikrobiol Epidemiol. Immunobiol. 2011; 3: 33 – 38 (in Russian).

5. Samokhvalov E.I., Nikolaeva L.I., Alhovsky L.I., Khlopova I.N., Makashova V.V., Petrova E.V., et al. The prevalence of HCV subtypes of in the Moscow region. Vopr. Virusol. 2013; 58 (1): 36 – 40 (in Russian).

6. Pimenov N.N., Closets V.P., Komarova S.V., Karandashov V.I., Neverov A.D., Michael G.V. et al. Hepatitis C in Russia: epidemiological characteristics and ways of improvement of diagnostics and monitoring. Epidemiology and infectious diseases. 2012; 3: 4 – 10 (in Russian).

7. Asatryan M.N., Salman E.R., Boev B.V., Kuzin S.N., Glinenko V.M., Efimov M.V. Modeling and forecasting of the epidemic process of hepatitis B. Epidemiology and Vaccinal Prevention. 2012; 1: 49 – 54 (in Russian).

8. Belyakov V.D. Epidemiological surveillance is the basis of modern organization of anti-epidemic work. J. Mikrobiol. Epidemiol. Immunobiol. 1985; 5: 53 – 58 (in Russian).

9. Mukomolov S.L., Levakov I.A., Sulyagina L.G., Sinaiskaya E.V., Bolsun D.D., Ivanova N.I. Modern epidemiology of hepatitis C in Russia. Epidemiology and infectious diseases. Current issues. 2012; 6: 21 – 25 (in Russian).

10. Novikova Y.B., Shulyak Yu.A., Demidovich, L.I., Rusakova E.B., Asratyan A.A. Assessing the level of knowledge about the possibility of infection, treatment and prevention of parenteral hepatitis B and C, HIV infection among patients of narcological hospital. Epidemiology and vaccinal prevention. 2013; 2: 80 – 86 (in Russian).

11. Kuzin S. N., Kudryavtseva E. N., Korabelnikova M., Khoruzhenko A. S., Glinenko V.M., Bogomolov P.O., et al. Gene Polymorphism of interleukin-28B as a parameter of the monitoring system of epidemiological surveillance of hepatitis C. Epidemiology and infectious diseases. 2015; 20 (2): 19 – 25 (in Russian).