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Table 1 Pneumococcal antimicrobial susceptibility testing results

From: Antimicrobial susceptibility of Streptococcus pneumoniae in adult patients with pneumococcal pneumonia in an urban hospital in Mozambique

Strain Penicillin MIC (mg/L) Oxacillin zone diameter BI Erythromycin zone diameter BI Co-trimoxazole zone diameter BI
1 <0.016 S S I
2 <0.016 S S S
3 0.016 S S R
4 0.016 S S I
5 0.016 S S S
6 0.016 S S I
7 0.016 S S I
8 0.023 S S S
9 0.047 S S R
10 0.047 NS S I
11 0.125 NS S R
12 0.25 NS S R
13 0.75 NS S R
14 0.75 NS S R
15 0.75 NS S R
16 ND NS S I
  1. Minimal inhibitory concentration (MIC) and zone diameter breakpoint interpretation (BI) of cultured pneumococcal strains, as measured by E-test (penicillin) and disc diffusion method (oxacillin, erythromycin, co-trimoxazole), respectively. S: susceptible; NS: non-susceptible; R: resistant. In pneumonia, when a dose of 1.2 g (2 million IU) × 4 is used, isolates with MIC ≤0.5 mg/L should be regarded as susceptible to benzyl penicillin; with a dose of 2.4 g × 4 or 1.3 g × 6, isolates with MIC ≤1 mg/L should be regarded as susceptible; and with a dose of 2.4 g × 6, isolates with MIC ≤2 mg/L should be regarded as susceptible [8]. Not done: ND.