2023年山东省某市牛羊布鲁氏菌病横断面调查OA

In order to investigate the prevalence of brucellosis in cattle and sheep in A City of Shandong Province,and to support the decision-making related to brucellosis with data,the inventory of cattle and sheep,prevalence rate of brucellosis and the prevalence status in farms/populations with different scales in the city were investigated using cross-sectional investigation and census sampling strategy.The results showed that the apparent prevalence of brucellosis in cattle was 0.64%(95%CI:0-1.52%)at farm/population level and 0.03%(95%CI:0-0.07%)at individual level,while that in sheep was 3.37%(95%CI:2.07%-4.67%)at farm/population level and 0.39%(95%CI:0.34%-0.44%)at individual level.The apparent prevalence of farms/populations with less than 50 animals was the lowest at farm/population level,with significant difference(P＜0.05)same as the farms/populations with an inventory of 50-99 or 100-499 animals.The reexamined farm/population apparent prevalence rate(25.00%)of positive farms/populations was higher than that(3.40%)of the whole city,with significant difference(P＜0.05).In conclusion,brucellosis was prevalent in cattle at low risk under steadily controlled status,but at higher risk in sheep,which should be specially concerned in subsequent monitoring and purification;the farm/population prevalence rates of brucellosis were different depending on the farms/populations at different scales,and higher in those with larger scale,guiding to find out possible risk factors;and the risk of recurrence of brucellosis in positive farm/population was relatively high,where continuous monitoring and purification should be conducted during future efforts of brucellosis prevention and control.