[The results of an immunoepidemiological examination of foci of epidemic parotitis].

The immunoepidemiological survey of 54 foci of epidemic parotitis showed that the epidemiological effectiveness index at preschool institutions, equal to 2.7, was essentially higher than at schools (2.1).

[The duration and strength of postvaccinal measles immunity].

A prolonged immunoepidemiological follow-up of a large group of children immunized against measles revealed a high epidemiological efficacy of a single vaccination. Cases of measles were registered only among those vaccinees in whose blood sera no specific hemagglutinins were detectable by titration with 4 hemagglutinating units of measles antigen prior to the disease. The study showed that groups of children seronegative with respect to measles appeared, as a rule, after unsatisfactory immunization and not due to loss of postvaccinal immunity with time.

[The duration and intensity of measles immunity after a repeat inoculation against this infection].

Controlled study lasting 6 years showed that booster immunization against measles was highly effective in children remaining seronegative, i. e. susceptible to this infection, after primary immunization: E = 97.

[The dynamics of the T-lymphocyte subpopulations and the peroxidase activity of the neutrophils in children immunized with a live mumps vaccine].

The amount of T-helpers and T-suppressors and the T-helper/T-suppressor ratio were determined in 30 practically healthy children aged 1.5-2 years, immunized with live parotitis vaccine prepared from strain -3. One immunization dose of the vaccine contained 7,950 HADU50.