豫南地区蜱类分布及蜱媒病原体调查与分析

摘要:目的　探讨豫南地区蜱虫分布特点，蜱媒病原体类型及流行性特征。方法　采用布旗法、体表检蜱法采集不同环境中蜱虫，采用PCR方法对蜱媒病原体的感染情况进行流行病学调查研究。结果　3-10月份采集蜱虫730只，分2属3种，其中长角血蜱占80.71%，为当地优势蜱种；蜱虫分布呈季节性消长；经PCR扩增出2种蜱媒病原体的特异性DNA片段，比对显示与发热伴血小板减少综合征病毒（SFTSV）、嗜吞噬细胞无形体有高度同源性；SFTSV阳性率为4.90%；嗜吞噬细胞无形体阳性率为2.49%。结论　豫南地区蜱虫分布有生态及季节性规律，蜱中携带SFTSV、人粒细胞无形体病的病原体，是造成人发热伴血小板减少综合征、无形体病的主要原因，应加强疫区防控措施。

Investigation and analysis of tick distribution and tick vector in Yunan district

Abstract: Objective To explore the tick distribution characteristics, tick vector pathogen types and epidemic characteristics in Yunan. Methods The cloth flag, body check ticks collected ticks in different environment. We used polymerase chain reaction (PCR) to tick vector pathogen infection status of epidemiological investigation and study. Results 730 ticks were collected from March to October, 3 species of 2 genus points, including Haemaphysalis which made up 80.71%. By PCR amplification of specific DNA fragments of two ticks media pathogens. SFTSV positive rate is 4.90%. Addicted to phagocytes no form positive rate was 2.49%. Conclusion Distribution of ticks in Yunan has ecological and seasonal regularity, and tick carring SFTSV and Human granulocytic anaplasmosis is the main cause of fever with thrombocytopenia syndrome and Human granulocytic anaplasmosis. Enhancing prevention and control are required.