T. A. Savitskaya
Kazan Research Institute of Epidemiology and Microbiology
Russian Federation

67, Bolshaya Krasnaya St., 420015, Kazan

V. A. Trifonov
Kazan Research Institute of Epidemiology and Microbiology; Kazan State Medical Academy
Russian Federation

67, Bolshaya Krasnaya St., 420015, Kazan;
36, Butlerova St., 420015, Kazan

I. V. Milova
Center for Hygiene and Epidemiology in the Republic of Tatarstan
Russian Federation

13a Sechenova St., 420061, Kazan

G. Sh. Isaeva
Kazan Research Institute of Epidemiology and Microbiology; Kazan State Medical University
Russian Federation

67, Bolshaya Krasnaya St., 420015, Kazan

I. D. Reshetnikova
Kazan Research Institute of Epidemiology and Microbiology; Kazan (Privolzhsky) Federal University
Russian Federation

67, Bolshaya Krasnaya St., 420015, Kazan

I. V. Serovа
Kazan Research Institute of Epidemiology and Microbiology
Russian Federation

67, Bolshaya Krasnaya St., 420015, Kazan