本文报道1985年对大瑶山隧道工人及有关人群进行军团病感染状况调查,检查652人中,LDB_1型血凝抗体阳性率为6％,GMT为3.29,滴度≥1:28者4人(0.61％)。用微量凝集试验检查111人,结果LDB_1型阳性率为9.91％,LDB_3型为10.81％,LDB_6型为5.41％。说明隧道施工现场人群中存在着多种型别军团病感染。 This article reports on the investigation of Legionnaires’ disease infection in Dayaoshan tunnel workers and related groups in 1985. Of the 652 patients examined, the positive rate of LDB-1 coagulation antibody was 6%, the GMT was 3.29, and the titer≥1: 28 was 4 0.61%). 111 people with microagglutination test, the results of positive rate of LDB_1 type was 9.91%, LDB_3 type was 10.81%, LDB_6 type was 5.41%. Description of the tunnel construction site population there are many types of Legionella infection.