EPIDEMIOLOGIC PECULIARITIES OF TICK-BORNE VIRAL ENCEPHALITIS IN CHILDREN

Aim. To estimate the manifestations of epidemic process of tick-borne viral encephalitis in children and detect some factors, determining morbidity. Materials and methods. Manifestations of epidemic process of tick-borne viral encephalitis in children and social risk factors for 32 years were analyzed using official statistics of “Centre of Hygiene and Epidemiology in Perm Krai” (forms №1, 2, 5 and 27). Results. Tick-borne viral encephalitis sickness rate in children exceeded the adult’s morbidity ( p < 0,05). Risk groups included unorganized children aged 3-6 years with morbidity index equal to 36,6 ± 9,2 per 100 thousand of the population and schoolchildren with this index 26,1 ± 2,9 per 100 thousand of the population ( p > 0,05). The share of patients with moderate and severe clinical course in children was 92,4 ± 2,5% versus 71,6 ± 1,3% in adults ( p < 0,05). Cyclic recurrence and seasonality of morbidity among children was more marked, as compared with the adults. Conclusions. Peculiarities of manifestations of epidemic process in children with tick-borne viral encephalitis are determined by differences in conditions they were infected and wider involvement into prophylactic immunization.

Tick-borne viral encephalitis, children, epidemic process manifestations, risk factors