| 魏晋举,童贵志,施世锋.恙虫病新媒介高湖纤恙螨的发现及流行病学研究[J].Chinese journal of Epidemiology,1985,6(5):277-280 |
| 恙虫病新媒介高湖纤恙螨的发现及流行病学研究 |
| Study of Trombicula gaohuensis Sp.nov:-A New Vector Foe Tsutsugamushi Disease |
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| Abstract: |
1957年笔者等在浙江省青田县高湖乡进行恙虫病调查中,发现一新种纤恙螨,定名为高湖恙虫(新种)[Trombicula (Leptotrombidium) gaohuensis Sp.nov.1957.],为了确定其媒介作用,从流行病学、病原学、生态学方面进行了一系列研究。
以该螨幼虫在作者身上作叮人试验,证明该螨能,叮咬健康人;以二代幼虫5~20只为一组,分5组叮咬健康小鼠,2组发病死亡,分离出2株恙虫病立克次体,电镜观察发现在卵和二代幼虫体内有大量恙虫病立克次体,实验证明该螨能经卵传递恙虫病立克次体,有自然感染;该螨分布于全省四个专区十余个县,为当地恙虫病疫源地的优势螨种,其季节消长与恙虫病的流行曲线相一致其生境分布与恙虫病患者的感染场所、地区分布相一致。经多年的调查研究,高湖纤恙螨已完全符合判定媒介恙螨的标准条件,故认定:我国发现的高湖纤恙螨为恙虫病的新媒介。 |
| English Abstract: |
In 1957, Wei Jiniu and others found a new species of tsutsugamushi during the investigation of the tsutsugamushi diseas in Gaohu village,Qingtian county Zhejiang provience.This new species of tsutsugamushi was then named Trombicula (Lepto trombidium) gaohuensis Sp.nov.1957.An overall study in epidemiology, ecology and etiology has been finished in order to determine its function as a medium for tsutsugamushi disease. The results reported as follows:
The authers made a biting test in themself and showed the larva had the ability to sting on human bodies; The second generation larva was devided into 5 groups with 5-20 larvas respective to bit the health mice.There were two groups became ill and then died from which two strains of bodies of Rickettsia tsutsugamushi were separated.With the help of electron microscope, we found a large quantity of Rickettsia parasited in the ovum of the strain and larvals tissues. This fact showed that the ovum was able to transmit Rickettsia tsutsugamushi; Isolation of the Rickettsia tsutsugamushi from the T (L) gaohuense indicated that the natural infection could be occus In the suitable conditions.
The T (L) gaohuensis is regional-wide in distribution in four areas,ten counties in Zhejiang provience. It is a superior species in the source area of the disease; Its growing and decling sensons were conformed to its prevalent cure,Its ecological distribution conformed to the incidence of the disease in civiliar population in the infected areas or regions.
These findings as above from the study for many years, it indicated that the T (L) gaohuense is fully adopted the standard condition of trombicula as a medium.So it was concluded that T(L) gaohuense found in Qingtian county is a new medium for tsutsugamushi disease. |
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