期刊
PARASITOLOGY INTERNATIONAL
卷 76, 期 -, 页码 -出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.parint.2019.102028
关键词
Coxiella burnetii; Rickettsia spp.; Piroplasma; Horses; China
类别
资金
- Japan Society for the Promotion of Science (JSPS) Core-to-Core Program
- National Natural Science Foundation of China
- Regional Science Foundation [31660711]
Q fever, spotted fever rickettsioses and equine piroplasmosis, are some of the most serious equine tick-borne diseases caused by Coxiella burnetii, Rickettsia spp., Babesia caballi and/or Theileria equi. This study surveyed and molecularly characterized these pathogens infecting horses in ten ranches from XUAR, China using molecular technology. Among 200 horse blood samples, 163 (81.5%) were infected with at least one of the pathogens. Rickettsia spp. was the most prevalent pathogen (n = 114, 57.0%), followed by C. burnetii (n = 79, 39.5%), T. equi (n= 79, 39.5%) and B. caballi (n= 49, 24.5%). Co-infections were observed in 61.3% of positive samples in this study. Statistically significant differences were observed between the sampling regions for C. burnetii, B. caballi and T. equi, and also in different age group for C. burnetii and T. equi. The genotype analysis indicated that C. burnetii htpB, Rickettsia spp. ompA, B. caballi rap-1, B. caballi 18S rRNA, T. equi EMA-1 and T. equi 18S rRNA gene sequences from horses in XUAR were variable. To the best of our knowledge, this study is the first report of C. burnetii and Rickettsia spp. infection and co-infected with piroplasma in horses in China. Overall, this study revealed the high infection rate of the pathogens in horses in XUAR, China. The current findings are expected to provide a basis for better tick-borne disease control in the region.
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