Comparing 2 versus 3 vaccinations.

<p>Virus neutralization antibody titers from mice (n = 4/group) 14 days following the second or the third IM immunization with inactivated polio vaccine (TP) (with or without adjuvant). Neutralizing antibody titers against poliovirus serotype 1–3 are shown. The individual titers for each mouse are plotted and the bar represents the mean neutralizing antibody titer. SEM of estimated log₁₀ values from N = 4 mice per group *, p<0.05, **, p<0.01, ***, p<0.001 are indicated in the graph using one-way ANOVA and Tukey's post-test for multiple comparisons. Indicated dosage units in the experiments correspond to Type 1 D-antigen units.