[Immunological structure of the population in a system of epidemiological surveillance of diphtheria].

The characteristics of antitetanus and antidiphtheria immunity in children, adolescents and adults in Perm have been determined by means of the passive hemagglutination test, and the tendency towards the decrease of their immunity to diphtheria with the increase of their age has been established. The registered and actual coverage of children and adolescents by immunization is characterized on the basis of the presence of antibodies to the tetanus component of combined vaccines. A considerable proportion of persons at boarding schools and vocational technical schools has been found to be seronegative with respect to diphtheria. The seasonal dynamics of antitoxic immunity is presented.