Alexander S. Kalyuzhin
Federal Scientific Center of Hygiene named after F.F. Erisman of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing; Volgograd State of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing Medical University” of the Ministry of Health of Russia
Russian Federation

3^rd year graduate student of the Department of general hygiene and ecology of the Volgograd State Medical University of the Ministry of Health of Russia, Volgograd, 400131, Russian Federation; junior researcher of the Dept. of Water Hygiene Institute of Complex Hygiene Problems of the Federal Scientific Center of Hygiene named after F.F. Erisman, Rospotrebnadzor, Mytishchi, 141014, Russian Federation

e-mail: o.t.t.o.94@mail.ru

Alexandra L. Bayrakova
Moscow Research Institute of Epidemiology and Microbiology named after G.N. Gabrichevsky of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing
Russian Federation

MD, PhD, senior researcher of the clinical microbiology and biotechnology laboratory of the Moscow Research Institute of Epidemiology and Microbiology named after G.N. Gabrichevsky, Rospotrebnadzor, Moscow, 125212, Russian Federation; assistant at the Russian University of Medicine

e-mail: alexandrabl@mail.ru

Marina A. Morozova
Rostov Research Institute of Microbiology and Parasitology of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing
Russian Federation

MD, PhD, senior researcher of the Laboratory of Sanitary Microbiology of Water Bodies and Human Microbial Ecology of the Rostov Research Institute of Microbiology and Parasitology, Rospotrebnadzor; Rostov-on-Don, 344003, Russian Federation

e-mail: morozova.q@mail.ru

Natalya I. Latyshevskaya
Volgograd State of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing Medical University” of the Ministry of Health of Russia
Russian Federation

MD, PhD, DSci., Professor, Head of the Department of general hygiene and ecology of the Volgograd State Medical University of the Ministry of Health of Russia, Volgograd, 400131, Russian Federation

e-mail: latyshnata@mail.ru

Tatyana A. Ruzhentsova
Moscow Research Institute of Epidemiology and Microbiology named after G.N. Gabrichevsky of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing
Russian Federation

MD, PhD, DSci., Professor, Deputy Director for the Clinical Work for Moscow Research Institute of Epidemiology and Microbiology named after G.N. Gabrichevsky, Rospotrebnadzor, Moscow, 125212, Russian Federation

e-mail: ruzhencova@gmail.com