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Clonal complex distribution for MenB strains in Finland (A) and sequence type distribution within the ST-41/44 clonal complex (B), by epidemiological years. NA, not available; ST, sequence type; MenB, meningococcal serogroup B; CC, clonal complex. Note: in panel B, STs appearing only once are represented with a diagonal stripe pattern to emphasize the recurrent STs (ST-41, ST-207, and ST-303).
