<prompt> Medium term intervention for Vitamin A prophylaxis is -Measles immunizationVit A supplementationFoification of foodGreen leafy vegetables  <response>: Ans. is c i.e., Foification of food Pre cntion and control of Xerophthalmia o is an integral pa of primary health care. An overall strategy can be defined according to WHO in terms of sho term, medium term long term action. a. Sho term action : o A sho term preventive approach is administration of large doses of vit A orally in recommended doses to vulnerable groups. o The recommended doses are o New Born o Children 12 100000 LU Once every 4-6 months 