[Long-term observations of dynamics of collective immunity to poliomyelitis in vaccinated children].

Examinations of children in the Moscow region in 1972 revealed low values of the herd immunity to poliomyolitis. This was suggested to be due to improper organization of vaccination of children. The regional health authorities took special measures for better organization of vaccination.

[Role of several conditionally-pathogenic enterobacteria in group acute intestinal diseases and food poisonings of unestablished etiology].

Results of studying group acute intestinal diseases of obscure (from the point of view of isolation of commonly known pathogenic bacteria of enteric family) etiology coursing by the type of food poisoning, in which conditioned pathogenic enterobacteria (Enterobacter cloacae, Klebsiella) demonstrated that the occurrence of these diseases was connected with ingestion of the same food product infected with the mentioned bacteria due to disturbance of the sanitary-epidemic regimen and rules of food storage. Carrier stage of conditioned pathogenic bacteria identical to those isolated from the patients was noted in contacts by the factor of infection transmission. Accumulation of factual material is necessary to solve the role played by conditioned pathogenic enterobacteria in such diseases.

[Status of herd immunity to poliomyelitis in children in the Moscow region].

The paper presents the results of 3-year observations of the status of herd immunity to poliomyelitis in 7 towns of the Moscow region. In individual years antibody for poliomyelitis virus of 3 types was found in 63-74% of the examined children and from 2.7 to 7.