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. 2021 Sep 20;16:100273. doi: 10.1016/j.lanwpc.2021.100273

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© 2021 The Author(s). Published by Elsevier Ltd.

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Comparison of OPA responses between vaccinated and unvaccinated children. (A) The proportions of children achieving opsonisation index (OI) ≥8 and (B) Geometric mean opsonisation indices (GMOIs) at 19 and 24 months of children who received PCV10 at 18 months of age or who were unvaccinated. Bars represent 95% CIs. P-values were calculated using a two-sided Fisher's exact test to examine difference in proportions (A) and an unpaired two-sided t-test to examine difference in GMOIs (B) between groups.

Comparison of OPA responses between vaccinated and unvaccinated children. (A) The proportions of children achieving opsonisation index (OI) ≥8 and (B) Geometric mean opsonisation indices (GMOIs) at 19 and 24 months of children who received PCV10 at 18 months of age or who were unvaccinated. Bars represent 95% CIs. P-values were calculated using a two-sided Fisher's exact test to examine difference in proportions (A) and an unpaired two-sided t-test to examine difference in GMOIs (B) between groups.