Vorontsova T A
Vopr Virusol. 1985 Mar-Apr;30(2):186-9.
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).
蜱传脑炎病毒传播链中断十年后，当地人群免疫阶层水平从59%降至39%。在所有年龄组中均发现血清转化率下降，但在10至30岁的农村居民中尤为明显（从39%降至13%），平均滴度从1.8 log2降至0.6 log2。在30岁以上的农村居民中，免疫阶层从71%降至54%，平均抗体滴度从3.4 log2降至2.5 log2。在自然疫源地反复感染的受试者中，抗血凝素持续了10年（观察期）。
