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Table 3 Characteristics of penicillin non-susceptible (MIC > 0.6 μg/ml) Streptococcus pneumoniae serotypes recovered from nasopharyngeal carriers in a large metropolitan area in Southeastern Brazil

From: Nasopharyngeal carriage, serotype distribution and antimicrobial resistance of Streptococcus pneumoniae among children from Brazil before the introduction of the 10-valent conjugate vaccine

Penicillin MIC Number of isolates (%) Serotypes (number of isolates) Institution (number of isolates)
0.12 μg/ml 5 (15.1) 19F (3), 6B, 34 Pediatric hospital
0.18 μg/ml 2 (6.1) 19F, 23F Pediatric hospital
0.375 μg/ml 2 (6.1) 6A, 23F Pediatric hospital
0.25 μg/ml 11(33.3) 23F (5), 6B (3), NT (2), 10A Pediatric hospital (7)
Day care center (4)
0.5 μg/ml 2 (6.1) 6A (2) Pediatric hospital
4.0 μg/ml 11 (33.3) 14 (9), NT (2) Pediatric hospital (5)
Day care center (6)
Total 33 (100)   
  1. MIC Minimum Inhibitory Concentrations.
  2. NT non-typeable.