Fig. 7From: Efficacy of a live attenuated highly pathogenic PRRSV vaccine against a NADC30-like strain challenge: implications for ADE of PRRSVSerological response. PRRSV-specific antibodies in the collected sera were detected by IDEXX ELISA kits. The threshold for seroconversion was set at a sample-to-positive (s/p) ratio of 0.4. Triangle (â–²) indicate the timepoints of HNhx challengeBack to article page