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莱姆病是最近才被认识的一种蜱作媒介的螺旋体感染,炎症性多系统疾病。最初本病集中地发生在美国康涅狄格州莱姆(Lyme)城的儿童,因而得名。1980年以来,欧洲及澳大利亚相继发现本病。在美国,发病地区到1984年增到21个州。病例数增到1498例。发病率约为15～37/10万人。发病年龄在2～71岁。男性略多于女性。发病季节在5～9月。
Lyme disease is a tick-borne helminth infection, an inflammatory multisystem disease that has only recently been recognized. The initial name of the disease was the concentration of children in Lyme, Connecticut. Since 1980, the disease has been found in Europe and Australia. In the United States, the incidence increased to 21 states by 1984. The number of cases increased to 1498 cases. The incidence is about 15 ~ 37/10 million people. The age of onset in the 2 to 71 years old. Men are slightly more than women. The season of onset is from May to September.