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莱姆病为一种蜱传播的自然疫源性疾病。经张哲夫[1]（1989）、阎大成[2]（1990）等人调查证实大兴安岭林区为该病疫区。目前国内临床表现方面报道较少，为摸清本地区该病发病特点，自1992至1995年做了调查。1材料与方法选北部4个林业局，东部阿里河林业局，中部库都尔林业局，
Lyme disease is a natural foci of tick-borne disease. Investigation by Zhang Zhefu [1] (1989) and Yan Dacheng [2] (1990) confirmed that the Daxin’anling forest area is the endemic area. At present, there are few reports on clinical manifestations in China. To find out the characteristics of the disease in this area, a survey was conducted from 1992 to 1995. 1 Materials and Methods Four forestry bureaus in the north, the Ali River Forestry Bureau in the east, the Kuduer Forestry Bureau in the middle,