K. D. Ermolenko
Research and Clinical Center for Infectious Diseases
Russian Federation

Konstantin D. Ermolenko – Cand. Sci. (Med.), scientifi researcher department of Intestinal Infections of Pediatric 

St. Petersburg

S. M. Kharit
Research and Clinical Center for Infectious Diseases; Saint-Petersburg State Pediatric Medical University
Russian Federation

Susanna M. Kharit – Dr. Sci. (Med.), Professor, Head of the Department of Prevention of Infectious Diseases of Pediatric Research and Clinical Center for Infectious Diseases, Chief Specialist for Vaccine Prevention of the City Health Committee of St. Petersburg; Professor of the Department of Infectious Diseases in ChildrenSt. Petersburg

A. A. Ruleva
Research and Clinical Center for Infectious Diseases; Saint-Petersburg State Pediatric Medical University
Russian Federation

Anna A. Ruleva – Cand. Sci. (Med.), scientific researcher of the Department of Prevention of Pediatric Research and Clinical Center for Infectious Diseases, St. Petersburg, Russia; Assistant of the Department of Infectious Diseases in ChildrenSt. Petersburg

L. Yu. Drozdova
National Medical Research Center for Therapy and Preventive Medicine
Russian Federation

Lyubov Yu. Drozdova – Cand. Sci. (Med.), Head of the Polyclinic Therapy Laboratory at the National Medical Research Center for Therapy and Preventive Medicine of the Ministry of Health of the Russian Federation, Chief Specialist in Preventive Medicine of the Ministry of Health of Russia

Moscow