[The indirect immunofluorescence reaction in the laboratory diagnosis of ixodid tick-borne borreliosis].

Serological verification of ixodid tick-borne borrelioses (TBB) is carried out in Russia by using IFA with the standard antigen prepared from the strain Ip-21 B. afzelii by the Laboratory of Infection Vectors, Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences. This study is under way at approximately 50 research and practical institutions that are situated in 30 large administrative territories of the country.