Epidemiological and Molecular Characteristics of and spp. in Tan Sheep, Ningxia, Northwest China.

Piroplasmosis and anaplasmosis are important zoonotic diseases of animal origin, which can be transmitted by ticks to infect animals. However, there is limited information on the infection of piroplasmosis and anaplasmosis in Tan sheep in Ningxia, China. In order to understand the prevalence of piroplasmosis and anaplasmosis in Tan sheep in Ningxia, 150 blood samples of Tan sheep from farms in five urban areas of Ningxia were detected by PCR, and some positive samples were sequenced to establish a phylogenetic tree. PCR revealed that the prevalence of spp. in Tan sheep in Ningxia was 28.0%. The overall prevalence of was 33.3%, of which spp. and spp. were 20.7% and 12.7%, respectively. Among the samples of different ages, the highest detection rates of and spp. were found in Tan sheep aged 20-30 months, and the detection rate of spp., spp., and spp. were 25.4%, 23.6%, and 36.3%, respectively. In this study, one species was identified as , two species were identified as and , and two species were identified as and , and the dominant species were and . To the best of our knowledge, this is the first report detailing the infection rate and genotype of and spp. in Tan sheep in Ningxia, China. The results of this study provide valuable data for understanding the epidemiology of tick-borne disease in Tan sheep in Ningxia, China, and lay a theoretical foundation for the prevention and control of piroplasmosis and anaplasmosis in Tan sheep in Ningxia, northwest China.