title: [Immunological structure of the population following the extermination of ticks in a natural focus of tick-borne encephalitis].
abstract: Ten years after the break of the chain of transmission of tick-borne encephalitis virus the level of the immune stratum of the local population declined from 59% to 39%. A decrease in the number of seroconversions was found in all the age groups but was particularly noticeable in the rural residents aged 10-30 years (39% and 13%), the mean titres declining from 1.8 log2 to 0.6 log2. In the rural residents over 30 years of age the immune stratum declined from 71% to 54%, the mean antibody titres from 3.4 to 2.5 log2. In subjects repeatedly infected in the natural focus, antihemagglutinins persisted for 10 years (the observation period).
authors.forename: T A
authors.initials: TA
authors.lastname: Vorontsova
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D002648:Child; D003634:DDT; D004197:Disease Reservoirs; D004669:Encephalitis Viruses, Tick-Borne / Q000276:immunology; D004675:Encephalitis, Tick-Borne / Q000453:epidemiology / Q000276:immunology*; D006801:Humans; D008875:Middle Aged; D012424:Rural Population; D012426:Russia; D013983:Tick Control; D013997:Time Factors
chemical_list: D000914:Antibodies, Viral; D003634:DDT
vernacular_title: Immunologicheskaia struktura naseleniia posle istrebleniia kleshcheĭ v prirodnom ochage kleshchevogo éntsefalita.