 Analysis: Antibiotic use in the 7 days following enrolment will be analyzed by logistic regression. Independent variables will include age, Tympanogram type AC, Viral upper respiratory symptoms for 5days prior to presentation to the ED, and pain requiring analgesia in the Emergency or at home within 6H of presentation. Quantitative and qualitative data will be described. Antibiotic drug data will be checked in NetCare to see if there is a discrepancy between verbal reports and NetCare. 