For citations:

Krasnova E.I., Karpovich G.S., Provorova V.V., Shestakov A.E., Kazakova Yu.V. Influenza in COVID-19 pandemic, epidemiological characteristics, approaches to vaccination. Lechaschi Vrach. 2021;(4):50-56. (In Russ.) https://doi.org/10.51793/OS.2021.98.48.009