Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector7912010.17816/kazmj79120Research ArticleAbout spirochetosesMühlensP.info@eco-vector.com150619221833112508202125082021Copyright © 2021, Mühlens P.2021<p>Until 1905, that is, before the discovery of the causative agent of syphilis, Spirochaeta pallida, only very little was known about spirochetes; at the present time the chapter "Spirochetosis" belongs to the most extensive and important chapters of microbiology. At the time given to me for my presentation, I can give you only a brief overview of the relevant field.</p>Kazan Medical archiveКазанский медицинский архив