[Clinical and laboratory characterization of Ixodes tick-borne borreliosis in the Baikal area].

Materials on Ixodes tick-borne borreliosis (ITB) for the period of 2000 - 2003 (i.e. 1,222 blood serum samples from patients with acute ITB and 629 patients with chronic ITB) were analyzed. The proportion of seropositive samples among those obtained from patients with acute and chronic ITB was determined with the use of the indirect immunofluorescence test. In addition, data on different clinical forms of the disease were presented. A high percentage of neurological manifestations in the early period of ITB (31%) and in the late period of the disease (72.8%) was noted. The conclusion was made concerning the necessity of using several diagnostic methods for more exact determination of the structure of the disease.