Otitis Media 。S.pneumoniae(35%) H.influenzae (20-30%) M.catarrhalis(10-15%) ·S.pyogenes(8-10%) 。S.aureus（1-2%) Treated with broad-spectrum antibiotics Incidence of S.pneumoniae reduced by vaccineOtitis Media • S. pneumoniae (35%) • H. influenzae (20-30%) • M. catarrhalis (10-15%) • S. pyogenes (8-10%) • S. aureus (1-2%) • Treated with broad-spectrum antibiotics • Incidence of S. pneumoniae reduced by vaccine