Figure 11.

Experiment 1 and 2: Total Ig and IgM profile of antibodies against S. suis serotype 7 purified capsular polysaccharide (CPS) from either vaccinated or non-vaccinated piglets from Experiment 1 (A,B) and vaccinated sows from Experiment 2 (C,D). Randomly selected 20 piglets (10 vaccinated and 10 non-vaccinated) from Experiment 1 and 20 randomly selected vaccinated sows from Experiment 2 were used for the quantification of antibodies against S. suis serotype 7 CPS. Total Ig [IgG + IgM] titers (A,C) and IgM titers (B,D) were determined by ELISA against purified S. suis serotype 7 CPS. Piglets were sampled at five weeks to evaluate titers of antibodies against serotype 7 CPS and sows were sampled at one and five weeks before parturition. Antibody titers for individual piglets or sows are shown with horizontal bars representing mean ± SEM. Values significantly different are shown in the graph with corresponding p value.