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为了解当地蜱类在莱姆病流行中的作用,1990年3～10月,我们在北京西山地区对蜱种、密度、季节消长及蜱的螺旋体感染率进行了调查;用培养法分离蜱体螺旋体,研究结果如下。1 材料和方法1.1 地理环境调查点位于北京西北郊区,距市中心约30km,地处西山山麓东南坡山地丘陵地带,自然植被为落叶阔叶林。主要家畜为牛、羊和马。当地居民多从事农牧业和采矿业。
In order to understand the role of local ticks in the epidemic of Lyme disease, we investigated ticks, density, seasonal fluctuation and ticks spirochaete infection rates in Xishan, Beijing from March to October 1990; isolated ticks Spirochetes, the findings are as follows. 1 Materials and Methods 1.1 Geographic Environment Survey is located in the northwestern suburbs of Beijing, about 30km from the city center, is located in the southeastern slope of the foothills of Xishan Mountain hilly region, the natural vegetation is deciduous broad-leaved forest. The main livestock are cattle, sheep and horses. Local residents are mostly engaged in agriculture and animal husbandry and mining.