Need suggestion how to improve kids immunity

Hii dear kids dont take food properly that's why their immunity s low .so dear give healthy food to ur daughter. Add milk ,cheese ,butter ,paneer ,green vegetables,fresh fruits, oats ,ragi ,nuts ,eggs to ur kids ..give fruit shakes as well as..its also good nd healthy for kids. Nd once ask to ur dr nd go for influenza vacin too .its very necessary nd improve immunity too ..try it ..