Announcing a new article publication for Zoonoses journal. Distribution of the bacterium flora in ticks has an essential role in mapping and preventing local tick-borne diseases. The purpose of this study was to map the bacterium flora and identify the main pathogens in ticks in grazing areas of Yunnan province.
The V3-V4 region of 16S rRNA amplifier sequencing was used to analyze the tick-borne pathogens in Rh. Microplus. A prevalence survey on B. burgdorferi s.l., B. miyamotoi, E. chaffeensis, A. phagocytophilum, Coxiella burnetiid, and the spotted fever group rickettsiae was carried out using PCR. Phylogenetic analysis was used to identify and cluster the main prevalent microbe amplicons.
One hundred five genera and 117 species were detected in 50 ticks. Rickettsia, Anaplasma, Borrelia, Coxiella, and Ehrlichia were identified in tick samples by high-throughput sequencing at the genus level. Pathogen prevalence testing showed that the ticks were positive for B. burgdorferi s.l. (9/50 [18%]), A. phagocytophilum (1/50 [2%]), and the spotted fever group rickettsiae (35/50 [70%]), which were closely related to Candidatus R. jiangxinensis.
The spotted fever group rickettsiae was the dominant pathogens in Xishuangbanna. Dual co-infection (1/50 [14%]) with Candidatus R. jiangxinensis and Borrelia garinii was demonstrated. V3-V4 high-throughput sequencing of the 16S rRNA gene was not sensitive to identify species for some bacteria, so more accurate and comprehensive analysis is necessary.
https://www.scienceopen.com/hosted-document?doi=10.15212/ZOONOSES-2023-0040
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eISSN 2737-7474
ISSN 2737-7466
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Lin Zhang, Guangqing Miao and Xuexia Hou et al. Spotted Fever Group rickettsiae are the Dominant Pathogens in Parasitic Rhipicephalus microplus in Yunpan and Menghun, Xishuangbanna, Yunnan Province, China. Zoonoses. 2024. Vol. 4(1). DOI: 10.15212/ZOONOSES-2023-0040