肺炎在临床极为常见 ,其感染病原多种多样。不同致病微生物所引起的肺炎虽然各有一定特点 ,但临床表现、胸部Ｘ线等方面常有交叉重叠 ,难以鉴别 ,因此病原学检查不仅对分析确诊非常重要 ,而且还是针对性地进行抗感染治疗的基础。痰是最方便和无创性病原学诊断标本 ,但极易受到? Pneumonia is extremely common in the clinic, with a wide variety of infectious agents. Although different pathogenic microorganisms caused by pneumonia each have their own characteristics, but the clinical manifestations, chest X-ray and other areas often overlap and overlap, it is difficult to identify, so not only for pathogenic examination confirmed the diagnosis is very important, but also targeted anti-infection The basis of treatment. Phlegm is the most convenient and noninvasive etiological diagnostic specimen, but highly susceptible?