Methods:380 cases with NP were selected their ages,time of onset,basic diseases,high risk factors and spectrums of pathogen,of which drug-resistance to 15 antibiotics and their MIC90 were analysed.

• 方法:对380例NP患者年龄、发病时间、基础疾病、易患因素、致病菌种类及对15种常用抗菌药物耐药性，MIC90抗菌活性进行分析。