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To estimate the number of infants to be immunized in the coming year, it is necessary to estimate the number of infants alive at one year.

No. of infants who have died during the year ( No of infants who have died during the year can be calculated by using the Infant Mortality Rate of the area).

Children below 3 years of age: average population of children below 3 years is approximately 8% of total population in most of the Indian States. This figure will assist the ANM in estimating no. of Vitamin A doses necessary. =1,00,000 X 8/1000 = 8,000

Children below 5 years of age: This age group constitutes approximately 13% of total population. The estimation of this number would assist the ANM in estimating the number of D.T. doses to be used. =1,00,000 X 13/1000 = 13,000