Figure 4

Serum and fecal RV-specific IgM, IgG, and IgA antibody titers determined by ELISA. A, B Serum and fecal samples obtained weekly from piglets immunized with a live attenuated strain 174-1V-80 and challenged by exposure with its virulent strain 174-1 at 2 weeks post-vaccination. C, D Serum and fecal samples obtained weekly from piglets immunized with a live attenuated strain PRG942V-80 and challenged by exposure with its virulent strain PRG942 at 2 weeks post-vaccination. E, F Serum and fecal samples obtained weekly from piglets immunized with a live attenuated strain K71V-80 and challenged by exposure with its virulent strain K71 at 2 weeks post-vaccination. G, H Serum and fecal samples obtained weekly from piglets immunized with a live attenuated trivalent vaccine containing live attenuated strains 174-1V-80, PRG942V-80, and K71V-80 and challenged by exposure with its virulent strains 174-1, PRG942, and K71 at 2 weeks post-vaccination. Antibody titers are expressed as the geometric mean titers (GMTs) for each group (n = 5 piglets per each group).