harsh 1.6 y male have chronic diarrhoea for 2 month blood in stool for15days no h/o fever cough ,vomiting ,pt treated with oflox oz, cefixime ,prebiotic for15 days,c/s stool show furazolidine sensitive given for 7 days then colonoscopy done show infective colitis ing pipracillin tazobactum and inj amikacin given for 10 days, zink for 15 days, anti ttg.-normal .iga normal ,serum ca -normal , usg -wnl , xray chest -wnl