Bacteria were eradicated from the middle ear fluid of 88% of evaluable children during treatment, including 31 of 37 of those infected with S. pneumoniae and all 54 who had H. influenzae infection.

• 取中耳液做病原学培养的病原体是化脓性肺炎链球菌，流感嗜血杆菌和粘膜炎莫拉菌，并都对左氧氟沙星敏感。