First Molecular Detection of Piroplasm Infection in Pet Dogs from Gansu, China.

Babesiosis, the hemolytic disease caused by , which is a tick-transmitted obligate intraerythrocytic protozoan parasite. This disease is responsible for significant mortality and morbidity rates and enormous economic losses to the livestock industry in tropical and subtropical regions worldwide. In this study, blood samples were collected from 141 pet dogs from Gansu, China, and analyzed for or spp. infection using specific PCR and sequencing based on 18S rRNA gene fragments. The results indicated that 18S rRNA gene sequences from 11 samples were similar to the 18S rRNA gene sequences in (2) and (9). The total infected rates of and were 1.4% (2/141) and 6.4% (9/141), respectively. This represents the first molecular report of in dogs worldwide and of in dogs from Gansu province of China. Furthermore, the finding of in dogs may represent the common infection of this parasite occurring in Gansu.