1991年汝南县钩端螺旋体病暴发流行的调查

THE STUDY OF THE EPIDEMIC OF LEPTOSPIROSIS AT RUNAN COUNTY IN 1991

１９９１年汝南县发生不明发热病例达数百人。经流行病学、血清学调查，结合临床表现证实为钩端螺旋体病流行。流行属雨水型；以黄疸群赖型为主；临床以流感伤寒型和肺出血型为主。其中肺出血型占有如此高的比率，在我省历史上尚属首次；病死率很高；猪和家鼠为本次流行的传染源或宿主；人群主要通过与疫水接触而感染；发病呈灶状分布，与带菌动物的数量、环境污染程度、个人生活习惯等有关。

We examined cases with fever of unknown reason at Runan County of HenanProvince. It was convinced that the epidemic was Leptospirosis by epidemiological,serologicaland clinical phenomena examinations. The epidemiological type was rain type and theserogroup was mainly icterohaemorrhagiae,the clinical expression was mainly common coldand pneumohemorrhagia. It is the first time to find so many Leptospirosis with pneumohem-orrhagia in our province.Pigs and mice were the main sources of infection. Humans got thediseases by contact with the conteminated water.The occurence of the diseases has relationto the amount of infected animals,the degree of environment contemination and personalhabit.