1. Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary MedicineChina Agricultural University Beijing 100193 China
2. CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of MicrobiologyChinese Academy of Sciences Beijing 100101 China
3. The Second Affiliated Hospital of Zhejiang UniversityZhejiang University Hangzhou 310009 China
4. Institute of Microbiology and Epizootics, Centre for Infection Medicine, Department of Veterinary MedicineFreie Universität Berlin Berlin 14163 Germany
5. Department of Medical Microbiology and Infectious Disease, Institute of Infection & Immunity, UHW Main BuildingHeath Park Hospital Cardiff CF14 4XN UK