V.    B. Voitenkov
Pediatric Research and Clinical Center for Infectious Diseases; Academy of Postgraduate Education of Federal Scientific Research Center of the Federal Medical and Biological Agency; Federal Scientific Center of Rehabilitation of the Disabled named after G.A. Albrecht of the Ministry of Labour and Social Protection of the Russia
Russian Federation

 9 Professor Popov St., Saint-Petersburg 197022

91 Volokolamskoe Shosse, Moscow 125371

50 Bestughevskaya St., Saint-Petersburg 195067 

E. V. Ekusheva
Academy of Postgraduate Education of Federal Scientific Research Center of the Federal Medical and Biological Agency; Belgorod State National Research University
Russian Federation

91 Volokolamskoe Shosse, Moscow 125371

85 Pobeda St., Belgorod 308015 

G. V. Lavrenova
I.P. Pavlov First St. Petersburg State Medical University of the Ministry of Health of Russia
Russian Federation

 6–8 Lva Tolstogo St., Saint-Petersburg, 197022 

N.   V.  Skripchenko
Pediatric Research and Clinical Center for Infectious Diseases
Russian Federation

  9 Professor Popov St., Saint-Petersburg 197022 

M. A. Bedova
Pediatric Research and Clinical Center for Infectious Diseases
Russian Federation

  9 Professor Popov St., Saint-Petersburg 197022 

A. A.  Komazov
Academy of Postgraduate Education of Federal Scientific Research Center of the Federal Medical and Biological Agency; Belgorod State National Research University
Russian Federation

91 Volokolamskoe Shosse, Moscow 125371

85 Pobeda St., Belgorod 308015