The Deputy Minister decrees to introduce polyvitaminization in the nursery schools, secondary schools, orphanages, sanatoriums and vocational training schools. Special attention in the process of polyvitaminization must be paid to the territories recognized as unfavourable in the course of sociohygienic monitoring. Optimal periods of polyvitaminization shall be from November to May, and also in summertime during sanitary prophylaxis campaigns and on the environmentally adverse territories and in