FIGURE 2.

(A) Matrix layout for observed intersections of the Streptococcus pneumoniae detection procedures applied to n = 1,549 nasopharyngeal (NP) samples, sorted by size. (B) Matrix layout for observed intersections of the S. pneumoniae detection procedures applied to nasopharyngeal and oropharyngeal (OP) samples from n = 319 adults sampled in the Netherlands, sorted by size. Circles in the matrix indicate sets that are part of the intersection, with nasopharyngeal and oropharyngeal samples colored in green and blue, respectively. The bar diagram displaying the intersection size is colored using the same scheme, with orange indicating an intersection that represents positivity in both sample types. MP stands for minimally processed and CE for culture-enriched.