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为掌握猪春秋两季注射口蹄疫疫苗后产生的免疫抗体消长规律,2015年9月至2016年8月每月采集猪血清样品,采用液相阻断ELISA方法进行了O型口蹄疫免疫水平监测。结果显示,10月和4月即注射疫苗1个月后猪O型口蹄疫抗体水平达到最高,以后逐渐降低,2~3月和7~8月降低至最低值。猪注射口蹄疫疫苗后产生的抗体水平在3个月后,群体合格率下降至60%以下。
In order to know the rule of the decrease of immune antibody produced by the injection of foot-and-mouth disease vaccine in pigs’ spring and autumn, monthly serum samples were collected from September 2015 to August 2016, and O-type foot-and-mouth disease immunity was monitored by liquid-phase blocking ELISA. The results showed that the antibody level of swine O-type foot-and-mouth disease reached the peak after 1 month of vaccination in October and April, then gradually decreased, and then decreased from February to March and from July to August. Antibody levels in pigs injected with foot-and-mouth disease vaccine dropped below 60% after 3 months.