1 College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
2 Key Laboratory of Zoonosis Control and Prevention of Guangdong Province, South China Agricultural University, Guangzhou, China.
3 National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, South China Agricultural University, Guangzhou, China.
4 Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China.
5 Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, Guangzhou, China.