中国媒介生物学及控制杂志

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亚须纤恙螨作为肾综合征出血热传播媒介初探

佘建军1; 张云2; 黄重安1; 于明明2; 姜克俭1; 吴光华2   

  1. 1陕西省卫生防疫站 西安710054; 2南京军区军事医学研究所
  • 出版日期:1998-02-20 发布日期:1998-02-20

Preliminary Study on Leptotrombidium (L.)subpalpale as Spreading Medium of HFRS

She Jian-jun*; Zhang Yun Huang; Chong-an; et al   

  1. *Health and Anti-Epidemic Station of Shanxi Province. Xian 710054
  • Online:1998-02-20 Published:1998-02-20

摘要: 目的:探讨亚须纤恙螨作为肾综合征出血热(HFRS)传播媒介的可能性。方法:调查亚须纤恙螨幼虫的地理分布与滋生地;采集该螨分离HFRS病毒;用PCR扩增检测分离HFRSV-RNA。结果:亚须纤恙螨幼虫滋生地和生境符合HFRS疫源地基本特征,主要分布于流行区,为疫区宿主动物体外优势螨种;其幼虫出现高峰季节(11、12月份),宿主带螨率为100%,指数分别为314.83和239.75;其季节消长与人群HFRS发病基本一致,无宿主特异性,能主动叮刺小白鼠。从鼠肺HFRSV抗原阳性鼠体所采集的亚须纤恙螨幼虫以及小黑板采集经叮刺吸食已感染HFRSV小白鼠体液后的游离螨幼虫,分别分离出1株HFRS。结论:该螨能感染HFRSV,有作为HFRSV传播媒介的先决条件。

关键词: 亚须纤恙螨, 肾综合征出血热, 病毒, 传播媒介

Abstract: The results of the epidemiological investigation showed that Leptotrombidium (L.)subpalpale was distributed mainly in the focis of wild rat type HFRS, which was a dominant species in this area, the constituent rate was 60.34%.The density of larva was higher in November and December.It's geographic distribution was correlated with the HFRS cases distribution in the focis, and the Apodemus agrarius, main infections resources of HFRS, bore high 314.83 (November) and 239.75 (December) of chigger mite index.From the L.(L.)subpalpale larva collected from HFRSV antigen positive rats and from the L.(L.)subpalpale larva captured with small blackboards, and then bited the mice infected with HFRSV, we isolated one HFRSV strain for each, which confirmed that L.(L.)subpalpale be subject to HFRSV and that forms the determined factor for L.(L.)subpalpale as the vector of HFRS.