Results of monitoring Vibrio cholerae in the Republic of Kalmykia in 2013-2017


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Abstract

Objective. To analyze the results of monitoring vibrio cholerae in the Republic of Kalmykia in 2013 to 2017. Materials and methods. A total of 105 nontoxigenic El Tor vibrio cholerae strains selected applying the geographic information systems (GIS) were used. PCR typing of the strains was performed by the previously developed procedure. The findings were statistically processed according to the STATISTIKA computer program (StatSoftRussia). Results. The investigation showed variability in V. cholerae 01 El Tor strains by phage lysability. It established the genetic diversity of V. cholerae isolates. The investigators revealed V. cholerae strains included in the cluster found only in the Republic of Kalmykia and in the Rostov Region. The presence of this set of genetic determinants suggested that water basins could be considered as a reservoir of pathogenicity/persistence genes. Conclusion. The aquatic ecosystems of the Republic of Kalmykia were ascertained to have the most favorable conditions for survival of nontoxigenic V. cholerae 01 El Tor strains in them for a few years, without excluding new drifts.

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About the authors

Darya A. Levchenko

Rostov-on-Don Antiplague Institute, Russian Federal Service for Supervision of Consumer Rights Protection and Human Well-Being

Email: levchenko_da@antiplague.ru
Cand. Med. Sci., Senior Researcher, Laboratory of Cholera Microbiology Rostov-on-Don, Russia

Irina V. Arkhangelskaya

Rostov-on-Don Antiplague Institute, Russian Federal Service for Supervision of Consumer Rights Protection and Human Well-Being

Email: irina070769@mail.ru
Researcher, Laboratory of Cholera Microbiology Rostov-on-Don, Russia

Vladimir D. Kruglikov

Rostov-on-Don Antiplague Institute, Russian Federal Service for Supervision of Consumer Rights Protection and Human Well-Being

МD, Head, Laboratory оf Cholera Microbiology Rostov-on-Don, Russia

Natalya E. Gaevskaya

Rostov-on-Don Antiplague Institute, Russian Federal Service for Supervision of Consumer Rights Protection and Human Well-Being

Email: gaevskaya.nata@mail.ru
Cand. Med. Sci., Head, Laboratory оf Bacteriophages Rostov-on-Don, Russia

Maria I. Ezhova

Rostov-on-Don Antiplague Institute, Russian Federal Service for Supervision of Consumer Rights Protection and Human Well-Being

Email: mari-ezho@yandex.ru
Researcher, Laboratory оf Cholera Microbiology Rostov-on-Don, Russia

Marina V. Rengach

Rostov-on-Don Antiplague Institute, Russian Federal Service for Supervision of Consumer Rights Protection and Human Well-Being

Email: marirengach@gmail.com
Junior Researcher, Laboratory оf Cholera Microbiology Rostov-on-Don, Russia

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