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Pneumococcal (Pnc) isolates selected from the FinOM study for PspA typing and samples selected for statistical analyses. Footnotes: a, frequencies of PspA families 1 and 2 were compared separately among NP and MEF strains; b, distribution of PspA families within capsular serotypes was analyzed among NP and MEF strains combined; c, distribution of PspA families within multilocus STs was analyzed among MEF strains; sequence data were available for MEF strains only.
