Seroepidemiological Investigation of Cattle Brucellosis in Chuxiong Area from 2017 to 2023
In order to understand the serum epidemiology of cattle brucellosis in Chuxiong area from 2017-2023,23421 serum samples of cattle collected during 2017-2023 were tested by tiger red plate and tube agglutination test,and analyzed from different perspectives such as different years,breeding types,and counties.The results showed that the positive rate of brucellosis showed an upward trend from 2017 to 2023,reaching its peak in 2019 and then beginning to decline.Among different breeding types,the positive rate in scale farms was higher than that in free-range farms (0.99% in scale farm and 0.08% in free-range farm).The top five cities with high positive rate of cattle brucellosis are cities with high cattle breeding density.The results show that the positive rate of cattle brucellosis of Chuxiong reached the national control standard (below 1.0% for cattle),but it was still higher than the national stable control standard (below 0.2% for cattle).The cattle introduction in lack of standardization is the main reason for the positive brucellosis tests,and the situation of brucellosis prevention and control in Chuxiong is still not optimistic.This investigation provides a reference for accurately understanding the distribution of cattle brucellosis in Chuxiong,determining the epidemic trend,and scientifically and reasonably formulating relevant prevention and control strategies.