1. MOE Joint International Research Laboratory of Animal Health and Food Safety College of Veterinary Medicine Nanjing Agricultural University Nanjing China
2. Key Lab of Animal Bacteriology Ministry of Agriculture Nanjing China
3. OIE Reference Lab for Swine Streptococcosis Nanjing China
4. State Key Laboratory of Infectious Disease Prevention and Control National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Changping Beijing China