Ai C X, Hu R J, Hyland K E, Wen Y X, Zhang Y G, Qiu Q C, Li D Y, Liu X D, Shi Z X, Zhao J H
Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China.
Int J Epidemiol. 1990 Dec;19(4):1061-5. doi: 10.1093/ije/19.4.1061.
Involvement of adult Ixodes persulcatus ticks in the transmission of Lyme disease in Hailin County, Heilongjiang Province, China, is reported. In 1986 from April through August adult I. persulcatus was the dominant tick in this endemic area with an infection rate of 43% for the Lyme disease spirochaete, Borrelia burgdorferi. The incidence of Lyme disease cases presenting the symptom of erythema chronicum migrans (ECM) within this area was correlated with the seasonal abundance of adult I. persulcatus and the number of people bitten by ticks. The frequency of ECM formation in all age groups varied and was associated with the frequency of tick bites. In addition, a strain of B. burgdorferi was isolated from a pool of six female I. persulcatus collected from this area. We demonstrate that the seasonal abundance of adult I. persulcatus and its frequent attachment to humans result in the spring and summer transmission of Lyme disease in this endemic area. The role of immature I. persulcatus in Lyme disease transmission is apparently minimal.
据报道，在中国黑龙江省海林县，成年全沟硬蜱参与了莱姆病的传播。1986年4月至8月，成年全沟硬蜱是该流行地区的主要蜱种，莱姆病螺旋体——伯氏疏螺旋体的感染率为43%。该地区出现慢性游走性红斑（ECM）症状的莱姆病病例发病率与成年全沟硬蜱的季节丰度以及被蜱叮咬的人数相关。所有年龄组中ECM形成的频率各不相同，且与蜱叮咬的频率有关。此外，从该地区采集的6只雌性全沟硬蜱的混合样本中分离出了一株伯氏疏螺旋体。我们证明，成年全沟硬蜱的季节丰度及其频繁附着于人类导致了该流行地区莱姆病在春季和夏季的传播。未成熟全沟硬蜱在莱姆病传播中的作用显然很小。
