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Overall incidence of meningococcal disease in Argentina, Brazil, Chile, and Uruguay during the period 2010–2021. MCV-C: meningococcal conjugate vaccine against serogroup C; MCV-ACWY: meningococcal conjugate vaccine against serogroups A, C, W, and Y. The year of introduction of meningococcal conjugated vaccine (MCV) into National Immunization Programs at determined ages is pointed out for each country.
