Figure 1.

The humoral responses based on ELISA in piglets born in the classical swine fever virus modified live vaccine, (CSFV MLV) and E2 vaccine groups. The results are expressed as blocking %. The dashed line indicates a blocking %, the threshold below which the samples were considered negative. A blocking % between 30 and 40 was interpreted as suspected (gray area). A blocking % greater than or equal to 40 was interpreted as positive. The error bars show the standard deviation (SD). P values < 0.05, < 0.01 and < 0.001 were considered statistically significant, highly significant and very highly significant, respectively.