[Immunity of children in Kharkov against poliomyelitis].

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.