Results the total response rate of levofloxacin and pefloxacin were 87.7% ,90.0%,the total cure rate of levofloxacin and pefloxacin were,77.2%,76.8%. Ther was no significant difference.

• 结果培氟沙星和左氧氟沙星治疗下呼吸道感染的有效率分别为90.；0%25和87