(a) Frequency of pneumococcal serotypes detected in NP samples. (b and c) Pneumococcal capsular genes detected in OP samples from S. pneumoniae (serotypes) (b) or other species (pseudoserotypes) (c). *, others include 9V, 9L, 18A-like, 18C-like, 20-like, 33F-like, 37, 41F-like, 47A, NT3a, and NT4a (all n = 2) and 1, 41A, 7A-like, 7F, 9A, 9N-like, 10F, 13-like, 17A-like, 17-like, 20A, 22A, 24B-like, 28A-like, 32F-like, 33B-like, 35B, 35F-like, 40, 41A-like, 46, and 48 (all n = 1).