“…The most-utilized CoPs are neutralizing antibody (Nab) titers, with higher antibody titers commonly linked to increased protection ( Figures 1E, F ). Reduced viral loads and the absence of clinical disease have consistently been associated with higher Nab titers following passive immunization or vaccination against FMDV (sheep, cattle, and pigs) ( 62 – 64 , 81 ), PRRSV ( 15 , 32 , 51 , 54 , 55 ), BTV ( 15 , 26 , 27 , 31 ), and CSFV ( 107 , 110 , 111 , 117 , 120 ) ( Table 1 ). Sterilizing immunity is associated with high Nab titers for PRRSV ( 54 , 186 ), CSFV ( 187 ), and BTV ( 188 , 189 ).…”