尽管已有百余种抗生素可供临床上使用,但是,肺炎仍旧是目前最常见的肺部感染性疾患。根据病史、体征、X线胸片、外周血象检查,作出肺炎的诊断并不困难。然而进一步明确其病原却是比较困难的。目前肺炎治疗效果不尽如人意,其中一个十分重要的原因在于临床上即使诊断出肺炎,却难 Although more than 100 antibiotics are available for clinical use, pneumonia remains the most common infectious lung disease. According to history, signs, chest X-ray, peripheral blood examination, diagnosis of pneumonia is not difficult. However, further clarification of the pathogen is more difficult. At present, the therapeutic effect of pneumonia is not satisfactory, and one of the most important reasons is that even if pneumonia is clinically diagnosed, it is difficult