to enhance the effectiveness of the immunoprophylaxis of measles and its influence on the epidemic process , a number of problems must be solved with the aim to improve the quality of the vaccine , especially its thermal stability , to establish the possibility of shifting the beginning of immunization from 15-17 months to 12 months of age , to increase the coverage of children with immunization against measles by decreasing the number of groundless exemptions from immunization and by immunizing children in risk groups according to individual schedules and dosage , to carry out selectively the booster immunization of persons who have lost their postvaccinal immunity , as revealed by laboratory test , or in whom such loss may be supposed , to introduce the objective method ( indirect hemagglutination test ) for controlling the state of immunity among different groups of the population into laboratory practice at sanitary and epidemiological stations .
C0008059
children
C0027361
persons