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Incidence of meningococcal disease by age group during the period 2010–2021 in (A) Brazil, (B) Chile, and (C) Uruguay. The year of introduction of meningococcal conjugated vaccine (MCV) into NIP at determined ages is pointed out for each country; m = months of age and y = years of age; MCV-C: meningococcal conjugate vaccine against serogroup C MCV-ACWY: meningococcal conjugate vaccine against serogroups A, C, W, and Y.
