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３１４８３和２３９７５；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。
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.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
1998年第1期47-50,共4页
Chinese Journal of Vector Biology and Control
关键词
亚须纤恙螨
肾综合征出血热
传播媒介
Leptotrombidium(L.) subpalpale HFRS Viruses Biting transmisson
