Child has ear infection put on bactrim, (sulfamethoxazole and trimethoprim) ciprodex infection cleared up 2 days off meds infection came back been on ciprodex 7 days still infected ?

Repeat infections: Usually when there is a repeat infection in a patient and the previous round of antibiotics was chosen merely as a matter of "probability"....the next chosen round should be done by way of studies and culture if possible. If there is any drainage or other data available to more definitely peg the bug then, that should be the next plan otherwise, resistance may develop and healing will be delayed.