1. N.F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Gamaleya Str., 18, 123098 Moscow, Russia
2. F.I. Inosemtsev City Clinical Hospital, Fortunatovskaya Str., 1, 105187 Moscow, Russia
3. Department of Infectious Diseases and Epidemiology, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, Delegatskaya Str., 20, Building 1, 127473 Moscow, Russia
4. Federal State Budgetary Educational Institution of Further Professional Education Russian Medical Academy of Continuous Professional Education, Ministry of Health of the Russian Federation, Barrikadnaya Str., 2/1, Building 1, 125993 Moscow, Russia