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Ecological indicators of areas and populations at risk for vitamin A deficiency:
When >50% of infants are not breast fed or  when infants ages 7-18 months do not get at least 3 times/week vitamin A rich foods *
$ Nutritional status is defined as measures <2 standard deviations of the WHO/NCHS standards:
       Stunting <2SD of height for age
       Wasting <2SD of weight for age
# LBW low birth weight <2500 g
* Dietary pattern when children do not get at least 3 times/week vitamin A rich foods