[The results of multiyear observations on the duration of the maintenance of immunity in those vaccinated and revaccinated against and recovered from measles].

The results of 5-year observations on the duration of immunity to measles virus in persons vaccinated and revaccinated against measles, as well as in persons having had this infection, are presented. The intensity of immunity was determined in the same persons with the use of the passive hemagglutination test. The study revealed differences in the formation, intensity and duration of postvaccinal immunity.

[Improvement in the primary immunization scheme for children against whooping cough, diphtheria and tetanus].

The authors studied the reactigenic properties, immunological and epidemiological efficacy of vaccination of children aged under one year by the experimental schemes (AKDC-AKDC-K -- 1 ml, and AKDC-AKDC-K -- 0.5 ml) in comparison with the official pertussis, diphtheria, and tetanus immunization scheme. There proved to be a greater immunogenicity and a better protective effect against pertussis in vaccination according to the experimental schemes.