Similarities and differences in the characteristics of the epidemical process tick-borne encephalitis and Lyme borreliosis

Objective: To identify common and distinctive characteristics of the epidemical process tick-borne encephalitis Lyme borreliosis on example Republic Karelia. Materials methods. The frequency infected tick bites, dynamics, intensity, territorial, gender, age social features incidence in 2000–2021 were analyzed according to official statistics, epidemiological examination foci laboratory studies. results studies 2379 blood samples adults who not ill vaccinated against for presence antibodies virus analyzed. Results. virulence ticks decreased from 23.6 1.3%, infection with borrelia at level 13.4– 38.4%. average long-term rates 6.2 6.6 per 100 thousand, dynamics had an pronounced downward trend, correlated requests medical care population affected by ticks. main clinical form tick–borne is meningeal (48%). Non-erythemic forms recent years amounted 39.1%. Antibodies class G detected 11.8±0.7% examined individuals. territory risk central eastern part south Republic, where I.persulcatus dominates. proportion urban residents among patients both infections higher, but rural populations did have significant differences. persons aged 40-49, 50-59 60 older are 1.6-2.2 times higher than those encephalitis, difference significant. At working age, percent men women, there no differences elderly. Conclusions: Similar different epidemic been identified, which should be taken improving detection diseases, predicting situation planning preventive measures.