2021-2024年湖南省羊O型口蹄疫抗体监测OA

In order to investigate the level and trend of immune antibody against foot-and-mouth disease type O(FMD-O)in goats in Hunan Province in recent years,a detection was continuously conducted from 2021 to 2024,covering 6 348 goats serum samples and 460 farms/times,followed by statistical analysis based on the results by year,season,region and type of premises.The results showed that,for FMD-O antibodies,the average qualification rate of samples was 71.25％(95％CI:70.14％-72.36％),and that of premises was 67.39％(95％CI:63.11％-71.67％),antibody level fluctuated with an increasing trend across different years in general;statistical differences(P＜0.05)were observed in antibody qualification rates across time,space and populations,and relatively higher in springs and autumns,the immune effect in central and western Hunan was superior to that in northern and southern Hunan,and antibody level on large-scale farms was higher than that in smallholders.In conclusion,the overall immune effect against FMD-O in goats in Hunan Province was satisfactory,in compliance with the requirements for FMD prevention and control proposed by the state;however,antibody level was unevenly distributed across regions,seasons and populations,indicating shortcomings in the disease prevention and control.Intensive monitoring and booster immunization were recommended in winters,or in regions with relatively low antibody level,or in smallholders,to continuously consolidate and improve the immune antibody level across the province,and thereby to reduce potential risk of FMD occurrence and spread.