Epidemiological Investigation on an Outbreak of Bovine Brucellosis in Guangyuan City,Sichuan Province
In August 2023,Brucella-positive antibodies were found in a cattle farm during routine brucellosis surveillance in Guangyuan City,Sichuan Province.In order to identify the source and spread status of Brucella,an epidemiological investigation was conducted on the farm through on-site interview,reviewing files and sampling for detection.It was inferred that,based on the results of on-site investigation and laboratory test,the pathogen leading to the outbreak was introduced by non-standard movement,and spread on a small scale on the farm due to poor awareness of operators about brucellosis and mixed feeding of imported cattle and local ones without isolation and monitoring.The outbreak was effectively controlled through stamping out,biosafety disposal,monitoring and other measures.In conclusion,relevant systems such as ante-introduction registration,supervision upon arrival,isolation and monitoring should be implemented,key population should participate in awareness improvement activities about prevention and control of brucellosis,and cross-regional transmission of brucellosis among livestock should be blocked to escort healthy development of livestock industry and public health safety.