For citations:

Guseva L.A., Arkhipov G.S., Nikitina N.N. Epidemiological characteristics and issues of vaccination against meningococcal infection in the Novgorod region for 2018–2020. Title in english. 2022;(2(127)):60-68. (In Russ.) https://doi.org/10.34680/2076-8052.2022.2(127).60-68