1. National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
2. Department of Disinfection and Vector Control, Nanchang Center for Disease Control and Prevention, Nanchang, Jiangxi 330038, China
3. Nanchang Police Dog Base of the Ministry of Public Security, Nanchang, Jiangxi 330100, China