肺炎链球菌肺炎疗程7～10天；流感嗜血杆菌肺炎疗程14天左右；葡萄球菌肺炎尤其MRAS、MRSE疗程宜适当延长，平均28天；肠杆菌肺炎14～21天左右；铜绿假单胞菌等肺炎21～28天左右；支原体、衣原体或嗜肺军团菌肺炎需21天或更长；真菌性肺炎则需1～2个月。
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