不明原因肺炎主要是为筛选和早期发现传染性非典型肺炎(即严重急性呼吸综合征,SARS)、人感染高致病性禽流感等可能造成广泛传播、对公共卫生构成严重危害、临床上主要表现为肺炎的疾病而提出的。提高不明原因肺炎的筛查诊断能力是提高早期发现和防治严重呼吸道传染病的重要措施 Unexplained pneumonia is mainly for screening and early detection of SARS (Severe Acute Respiratory Syndrome SARS), human infection of highly pathogenic avian influenza and other may cause widespread transmission, constitute a serious public health hazard, the main clinical The performance of the disease and pneumonia proposed. Improving the ability of screening and diagnosis of pneumonia of unknown cause is an important measure to improve the early detection and prevention of severe respiratory infectious diseases