Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector5761710.17816/kazmj57617Research ArticleAbout the duration of immunity with smallpox vaccinationSuslovaA. G.info@eco-vector.comNebolyubovG. E.info@eco-vector.com1304194036449510601202106012021Copyright © 2021, Suslova A.G., Nebolyubov G.E.2021<p>During the general smallpox vaccination in the spring of 1931 in the city of Tomsk, 3.113 people passed through our point. To check the results, 2,315 people were involved, of which 30 were vaccinated and 2,285 were revaccinated.</p>Kazan Medical archiveКазанский медицинский архив