Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.
Department of Infectious Diseases, IIS-Fundación Jiménez Díaz and Universidad Autónoma de Madrid, Madrid, Spain.
Vector Borne Zoonotic Dis. 2020 Jan;20(1):10-14. doi: 10.1089/vbz.2019.2500. Epub 2019 Aug 13.
Bacterial arthropod-borne pathogens can often cause fever in Africa, but rural laboratories in these settings are usually too basic to provide a precise picture of their epidemiological impact. Our aim was to determine the prevalence of bacterial pathogens in fleas and lice in a rural area of southeast Ethiopia. Between July and November 2013, we extracted DNA from 91 fleas ( [ = 50; 54.9%], [ = 37; 40.1%], and [ = 4; 4.4%] and 30 lice ( [ = 16; 53.3%] and [ = 14; 46.7%]), using two quantitative PCR (qPCR) analyses to look for bacteria from the genera: , , , , , , and . Of the 91 fleas analyzed, pathogens were present in 79 (86.8%), including ( = 41; 45%), ( = 40; 44.0%), ( = 2; 2.2%), like agent ( = 1; 1.1%), and ( = 1; 1.1%). was the flea species most frequently infected with (67.7%), followed by (30.7%) ( < 0.001). Of the 30 lice identified, pathogens were present in 7 (23.3%): ( = 4; 16.7%), ( = 2, 6.7%), and ( = 1, 3.3%). Thus, in this rural area of Africa, fleas and lice can transmit parasitic pathogens to humans, causing febrile symptoms.
在非洲,节肢动物传播的细菌病原体经常引起发热,但这些环境下的农村实验室通常过于基础,无法准确描绘其流行病学影响。我们的目的是确定埃塞俄比亚东南部农村地区跳蚤和虱子中细菌病原体的流行情况。2013 年 7 月至 11 月期间,我们从 91 只跳蚤([ = 50;54.9%],[ = 37;40.1%]和[ = 4;4.4%])和 30 只虱子([ = 16;53.3%]和[ = 14;46.7%])中提取 DNA,使用两种定量 PCR(qPCR)分析方法寻找来自以下属的细菌:、、、、、和。在分析的 91 只跳蚤中,有 79 只(86.8%)携带病原体,包括( = 41;45%)、( = 40;44.0%)、( = 2;2.2%)、似病原体( = 1;1.1%)和( = 1;1.1%)。感染 (67.7%)最常见的跳蚤物种是( = 37;30.7%)(<0.001)。在鉴定的 30 只虱子中,有 7 只(23.3%)携带病原体:( = 4;16.7%)、( = 2;6.7%)和( = 1;3.3%)。因此,在非洲这个农村地区,跳蚤和虱子可以将寄生性病原体传播给人类,引起发热症状。