G.I. NURULLINA, T.N. KHALFINA, E.R. ABDULLINA, D.M. SHAIDULLINA  Kazan State Medical University, Kazan  Contact details: Nurullina G.I. — PhD (medicine), Assistant Lecturer of the Department of Hospital Therapy Address: 49 Butlerov St., Kazan, Russian Federation, 420012, tel.: +7 (843) 290-18-20, e-mail: nurguzel@yandex.ru  The purpose — to study the features of vaccination, including against COVID-19, in […]