Cao W C, Gao Y M, Zhang P H, Zhang X T, Dai Q H, Dumler J S, Fang L Q, Yang H
Institute of Microbiology and Epidemiology, Beijing 100071, China.
J Clin Microbiol. 2000 Jul;38(7):2778-80. doi: 10.1128/JCM.38.7.2778-2780.2000.
A total of 717 ticks collected from southern China were examined by nested PCR for the presence of Ehrlichia chaffeensis. Sixteen (55. 2%) of 29 adult Amblyomma testudinarium ticks and 28 (11.7%) of 240 adult and at least 4.2% of 215 nymphal (pooled specimens) Haemaphysalis yeni ticks tested positive. Four other species of ticks were negative. Selected positive amplicons were confirmed by DNA sequencing.
采用巢式聚合酶链反应(nested PCR)检测从中国南方采集的717只蜱虫,以确定是否存在查菲埃立克体(Ehrlichia chaffeensis)。29只成年龟形花蜱(Amblyomma testudinarium)中有16只(55.2%)检测呈阳性,240只成年和至少215只若虫(混合样本)的新血蜱(Haemaphysalis yeni)中有28只(11.7%)检测呈阳性。其他四种蜱虫检测为阴性。通过DNA测序对选定的阳性扩增子进行了确认。