2005年长泰县钩端螺旋体病疫源地调查

Investigation on Characteristics of Infection Focus of Leptospirosis in Changtai County in 2005

[目的]掌握监测点钩体病的疫情动态变化,为制定防治对策提供参考依据。[方法]对2005年福建省钩端螺旋体病监测点长泰县钩体病主要宿主动物动态及其带菌情况、血清抗体群与健康人群钩体免疫水平进行调查。[结果]监测点未有疫情报告。监测点平均鼠密度为6.71%;黄毛鼠占52.88%,血清钩体抗体阳性率为79.07%,感染菌群主要是爪哇群、波摩那群;从黄毛鼠中分离出3株钩体(爪哇群2株、澳洲群1株)。健康人群钩体抗体阳性率为16.08%,随着年龄的增长抗体阳性率逐渐增高(P<0.01),菌群较为分散。[结论]长泰县监测点是钩体病的自然疫源地,主要宿主动物为黄毛鼠,健康人群感染菌群复杂。

[Objective]To understand the Leptospirosis epidemic situation of monitoring site and provide basis for its control. [Methods]To investigate and analyze the situation of monitoring site according to the national surveillance project. [Resuits]No Leptospirosis case was reported in monitoring site. The average rat density in monitoring site was6.71%. Rattus Losea was the main host （52.88%）,the antibody positive rate of Leptospira for them was 79.07% ,and 3 Leptospira strains were separated from them. The main serogroups were Javanica and Pomona. The antibody positive rate of Leptospira for healthy people was 16.08% ,and the rate increased with their age rising. The serogroups of Leptospira were dispersible in healthy people. [Conclusion]The monitoring site was a special natural focus of infection. Rattus Losea was the main host and source of infection. The serogroups of Leptospira in healthy people were complex and multiplex.