军团病是一种急性呼吸道传染病,最近还证实是一种人畜共患的疾病。临床表现发病急,与肺炎不易鉴别,既可散发又可流行,波及范围广,病死率较高,此病最先发现于一九七六年七月美国费城一个旅馆,当时美国退伍军人宾夕法尼亚州分会在此举行年会,七月二十二日～八月三日暴发了原因不明而临床表现为发热、咳嗽、肺炎的患者一百四十九人,附近 Legionnaires’ disease is an acute respiratory infection that has recently been confirmed as a zoonotic disease. Clinical manifestations of acute onset, and pneumonia is not easy to identify, both disseminated and can be popular, spread a wide range of high mortality, the disease was first discovered in July 1976 a Philadelphia hotel in the United States, when the United States veterans of Pennsylvania The branch held an annual meeting here. From July 22 to August 3, 149 patients with unknown clinical manifestations, fever, cough and pneumonia were found nearby.