Sequence-type (ST) distribution of serotype 6C invasive pneumococcal disease (IPD, n = 71) or nasopharyngeal (NP) colonizing (n = 30) strains.

*STs were grouped on the basis of at least five out of seven identical alleles, according to eBURST analysis;

°According to the Pneumococcal MLST website, http://spneumoniae.mlst.net; 9 Dec 2013, last accessed;

§

In bold, major related serotype; in brackets, single report.