Nosatenko A I, Gruntovskaia L G, Golub O G, Ivanova R B, Nikitina R K
Zh Mikrobiol Epidemiol Immunobiol. 1983 Jan(1):96-100.
The study of the state of herd immunity among the children of Kharkov, carried out in 1980-1981, has revealed different immunity levels in children of different age. The conclusion has been made that the constant control of the state of immunity to 3 types of poliovirus is necessary, especially in infants and in school children, as well as in those not attending children's institutions.
1980 - 1981年在哈尔科夫对儿童群体免疫状况进行的研究表明，不同年龄段儿童的免疫水平存在差异。得出的结论是，有必要持续监测对3种脊髓灰质炎病毒的免疫状况，特别是对婴儿、学龄儿童以及未入托儿童。
