云南省大理市鼠、蜱中检测出斑点热群立克次体DNA

Spotted Fever Group Rickettsia DNA was Detected in Wild Rodent and Tick in Dali, Yunnan Province, China

目的 了解鼠、蜱中自然感染斑点热群立克次体状况。方法 用PCR法检测鼠类脾脏和蜱类中的斑点热群立克次体DNA序列片段。结果 在云南省大理市下关野外山地捕获鼠类 9种 5 1只 ,从大足鼠 (1/ 15 )、大绒鼠 (1/ 7)和短尾 (1/ 8)各检出阳性 1份 ,其他鼠种均为阴性 ,总阳性率为 5 .88%。从采自弥渡县的 2 0 8只勐突血蜱中检出阳性 5份 ,阳性率为 2 .40 %。结论 初步认为云南省大理地区存在斑点热疫源地。

Objective To study the infection of Spotted Fever Group Rickettsia (SFGR) in wild rodents and ticks in Dali, Yunnan province. Methods Detecting SFGR DNA sequence fragment in spleen of rodents and ticks by PCR assay. Results The 51 rodents belonging to 9 species were captured in Xiaguan, Dali city. Three specimens were positive in spleen of rodents that were Rattus nitidus ( 1/15 ), Eothenomys miletus ( 1/7 ) and Anowrosorex squamipesi ( 1/8 ). Five specimens were positive in 208 ticks ( Haemaphysalis montgomeryi ) collected in Midu county, Dali prefecture. Conclusion It shows preliminarily that there is natural focus of Spotted Fever in Dali, Yunnan province.