1 Sydney School of Veterinary Science, The University of Sydney, Camden, NSW, Australia.
2 Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.
3 College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China.
4 National Research Center for Veterinary Medicine, Luoyang, China.