[Bacterial zoonoses with natural focality: current trends in epidemic manifestation]

Current trends in epidemic manifestation of some bacterial zoonoses with natural focality and their role in human infectious pathology have been reviewed and analyzed. Update information on the etiological agents of "emerging" and "re-emerging" infections--Astrakhan spotted fever, bartonellosis, ixodes tick-borne borrelioses, monocytic erhrlichiosis and canine brucellosis, recently isolated on the territory of Russia, is presented. The main factors at play in the process of urbanization of bacterial zoonoses are discussed.