对近几年349例(60%是老年和近老年人)急性肺炎的病原体进行分析,经微生物学和血清学检查确定,由一种病原体引起者156例(44.7%),由两种以上病原体引起者193例(55.3%)。84.5%的病例查出病原菌及其标记物,包括肺炎球菌(60%)、链球菌(15%)、嗜血杆菌(15%)、军团菌(2%)。克雷伯氏菌(1.5%)、葡萄球菌(0,5%),肠 In recent years, 349 cases (60% of the elderly and the elderly) were analyzed for pathogens of acute pneumonia. According to the results of microbiology and serology, 156 cases (44.7%) were caused by one kind of pathogen and more than two kinds of pathogens 193 cases (55.3%) were caused. Pathogens and their markers were detected in 84.5% of cases, including pneumococcus (60%), Streptococcus (15%), Haemophilus (15%) and Legionella (2%). Klebsiella (1.5%), Staphylococcus (0,5%), gut