Q. A 5-year-old boy presents to the outpatient department by his father with a history of a mild delayed allergic reaction to penicillin. He complained that for the past three days, he has experienced fevers, malaise, otorrhea, and rhinorrhea. On physical examination, the patient's temperature is 101°F (38.3°C). He appears irritable but is consolable. Examination of the nasal passages reveals erythematous inferior turbinates and otoscopic examination shows a bulging, opaque tympanic membrane with limited mobility. What is the most appropriate antibiotic therapy for this patient?