question: hello doctor ,my son is 8 months old and he weighs 8.5kgs. he is having loose motions from 23may. doctors have tried various medication...........like zinc acetate,ors,nutrolin B,nor metrogel,eco norm,zifi100. He gets better for a couple of days and again it starts...i have got his siools tested twice, the results show same infection e coli.what should i do now ?