For citations:
Druzhinina T.A., Zvyagin A.M., Shirina N.Yu., Shirina E.S. The Epidemiological Situation with Pertussis in the Yaroslavl Region and its Development Trends. Epidemiology and Vaccinal Prevention. 2025;24(3):35-43. (In Russ.) https://doi.org/10.31631/2073-3046-2025-24-3-35-43