3.5 Quality of SVV-specific antibody
All minks were fed in the same manner. Clinical symptoms were monitored daily for 28 days. At 0, 7, 14, 21, or 28 dpc, serum was collected to measure the anti-SVV neutralizing antibody titer in the two groups (Figure 3C). SVV antibodies were detected in the infected group and their change was measured over the 28-day experiment. No change in antibody detection or levels was observed in the control group. In infected mink, the antibodies gradually increased from the first to the third week. The antibody titer peaked during the third week and then decreased slightly but non-significantly.