Figure 3

Meta-analysis of observational studies examining the effect of Hib conjugate vaccines on Hib meningitis incidence by: A) 1 dose, B) 2 doses, C) 3 doses of vaccine.
Meta-analysis of observational studies examining the effect of Hib conjugate vaccines on Hib meningitis incidence by: A) 1 dose, B) 2 doses, C) 3 doses of vaccine.