1. The State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
2. College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
3. Department of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
4. Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA
5. Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture, Wuhan 430070, China
6. Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, Huazhong Agricultural University, Wuhan 430070, China