FIELD: medicine, pediatrics.
SUBSTANCE: one should form groups in 6-yr-old children who are either going to the Far North or leaving this region. In leaving group vaccine should be introduced about 7 wk before their departure, not later, as for arriving group - about 10 wk after arrival, not earlier. One should follow these mentioned time intervals to increase efficiency of immunization against parotitis due to child's body adaptation to sharply altering climatic conditions.
EFFECT: higher efficiency of revaccination.
6 ex
