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Meningococcal outbreaks/epidemics in the Asia–Pacific 1997–2020. CV, conjugate vaccine; m, months of age; MeNZB, meningococcal serogroup B strain-specific outer membrane vesicle vaccine; Men(A/C/W/Y), meningococcal vaccine containing one serogroup or combinations of serogroups A, C, W and Y; NR, not reported; n, number of cases; PS, polysaccharide vaccine; y, years of age
