Key Laboratory of Animal Epidemiology of the Ministry of Agriculture ChinaCollege of Veterinary Medicine China Agricultural University Beijing 100193 China;
Key Laboratory of Animal Epidemiology of the Ministry of Agriculture ChinaCollege of Veterinary Medicine China Agricultural University Beijing 100193 China;
Key Laboratory of Animal Epidemiology of the Ministry of Agriculture ChinaCollege of Veterinary Medicine China Agricultural University Beijing 100193 China;
Key Laboratory of Animal Epidemiology of the Ministry of Agriculture ChinaCollege of Veterinary Medicine China Agricultural University Beijing 100193 China;
Bovine mastitis; Vaccination; Meta-analysis;