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. 2021 Aug 11;10(4):1949–1988. doi: 10.1007/s40121-021-00499-3

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Fig. 4 — Meningococcal outbreaks/epidemics in Africa 1997–2020. CV, conjugate vaccine, Men(A/C/W/Y), meningococcal vaccine containing one serogroup or combinations of serogroups A, C, W and Y; n, number of cases; NR, not reported; PS, polysaccharide vaccine; y, years of age