1. Institute of Poliomielitis and Viral Encephalitides; FSBSI Chumakov FSC R&D IBP RAS; Poselok Instituta Poliomielita, 8 bd. 1, Poselenie Moskovsky Moscow 108819 Russia
2. Sechenov First Moscow State Medical University, Trubetskaya ul., 8; Moscow 119991 Russia
3. Lomonosov Moscow State University, Leninskie Gory, 1; Moscow 119991 Russia
4. Engelhargt Institute of Molecular Biology; Russian Academy of Sciences, Ul. Vavilova, 32; Moscow 119991 Russia