<prompt> Medium term intervention for Vitamin A prphylaxis is -Measles immunizationVit A supplementationFoification of foodGreen leafy vegetables  <response>: - medium term intervention for vitamin A prophylaxis is foification of ceain foods with vitamin A. - addition of vitamin A to dalda in India is a typical example. Reference : Parks textbook of preventive and social medicine, 23rd edition, pg no:641 p 