Percentage serogroup distribution of IMD cases worldwide from 2017 to 2019 (geographical regions with available data) [16, 17, 19, 21–24, 26, 27, 31–33]. Data from China, Colombia, Dominican Republic, Japan, Kuwait, Mozambique, Paraguay, South Korea, Uruguay and Venezuela are not shown. Percentages may not sum to 100% due to rounding. *Serogroup A is included in the “Other” category. †Serogroups other than B, C, W and Y are included in the NG category. ‡Among the African meningitis belt countries (listed in the Supplementary Material), Benin, Burkina Faso, Cameroon, Central African Republic, Ghana, Mali, Niger, Nigeria, Senegal, South Sudan, Chad and Togo contributed serogroup data for 2019. IMD, invasive meningococcal disease; NG, nongroupable.