Results 350 serums were serologically positive for BV antibody,10 serums were serologically doubtful for BV antibody,and the others were all serologically negative for BV antibody.

• 结果检测样品629份,其中350份呈BV抗体阳性,10份血清呈BV抗体可疑,其余血清为抗体阴性。