Molecular Genotyping-Based Etiological Characteristics of Enterovirus Infection in Irkutsk Oblast


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Abstract

A virological study of 642 samples including biological material from enterovirus infection (EVI) patients and wastewater from the sewage treatment plants of Irkutsk has been performed in cultured RD cells. Eighty-six strains were isolated in 2011 and 2014 and subsequently identified by a neutralization test (NT) with type-specific sera. A molecular genetic approach was used to confirm the composition of the circulating enterovirus (EV) group and identify virus strains. Nucleotide sequences of the VP1 gene fragment were determined and analyzed for 43 EV strains. EVs were divided into two groups: viruses endemic for the region (ECHO6, ECHO11, and Coxsackie B4) and imported from China (Coxsackie A4, enterovirus type 71 (EV71), and Coxsackie B5). Genetic variants of EV not encountered previously in Irkutsk oblast (Coxsackie A4 and EV71) have been identified. The dominant role of ECHO6, Coxsackie B4, and Coxsackie B5 as causative agents of EVI in Irkutsk oblast in 2011 and 2014 has been established.

About the authors

A. V. Sevostianova

Irkutsk Anti-Plague Research Institute of the Russian Federal Service of Consumer Protection

Author for correspondence.
Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664047

T. I. Borisova

Irkutsk Anti-Plague Research Institute of the Russian Federal Service of Consumer Protection

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664047

T. A. Gavrilova

Irkutsk Oblast Office of the Russian Federal Service of Consumer Protection

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664003

M. I. Khakimova

Irkutsk Oblast Center for Hygiene and Epidemiology, Russian Federal Service of Consumer Protection

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664047

V. B. Kazanova

Irkutsk Oblast Center for Hygiene and Epidemiology, Russian Federal Service of Consumer Protection

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664047

E. I. Andaev

Irkutsk Anti-Plague Research Institute of the Russian Federal Service of Consumer Protection

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664047

M. V. Chesnokova

Irkutsk Anti-Plague Research Institute of the Russian Federal Service of Consumer Protection

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664047

R. V. Adelshin

Irkutsk Anti-Plague Research Institute of the Russian Federal Service of Consumer Protection

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664047

A. D. Botvinkin

Irkutsk State Medical University, Ministry of Health of the Russian Federation

Email: adm@chumin.irkutsk.ru
Russian Federation, Irkutsk, 664003

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