本文报告了从1984年9月至1985年6月在成都地区按季节共收集猪血清731份,并监测甲、乙型流感病毒抗体的分布情况,用血凝抑制试验测得乙型流感抗体阳性56份,不同季节阳性率在 0～11.6％之间,并用单扩溶血试验复核已测得血抑抗体阳性的猪血清,获双阳性率为48.6％,进一步印证了猪是乙型流感病毒贮存宿主。 This paper reports the collection of 731 pig serum samples from September 1984 to June 1985 in Chengdu region and monitoring the distribution of antibody against influenza A and B viruses. The antibody against influenza B was measured by hemagglutination inhibition test 56 copies, the positive rate in different seasons was between 0 ~ 11.6%, and the hemolymph antibody-positive pig serum was checked by single expansion hemolysis test, and the double positive rate was 48.6%, further confirming that pigs were stock of influenza B virus Host