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Table 3 Number and proportion of pneumococcal isolates from children aged <5 years in Kibera and Lwak, 2009, that are susceptible, intermediate, and resistant by antibiotic (N = 657)

From: Pneumococcal carriage and antibiotic susceptibility patterns from two cross-sectional colonization surveys among children aged <5 years prior to the introduction of 10-valent pneumococcal conjugate vaccine — Kenya, 2009–2010

Antibiotic Susceptible Intermediate Resistant
  Break-point* μg/ml N (%) Break-point* μg/ml N (%) Break-point* μg/ml N (%)
Penicillina ≤0.06 118 (18.6) 0.12–1 500 (79.0) ≥2 15 (2.4)
Chloramphenicolb ≤4 615 (98.1) n/a n/a ≥8 12 (1.9)
Levofloxacinb ≤2 627 (100) 4 0 ≥8 0
Erythromycina ≤0.25 625 (98.7) 0.5 1 (0.2) ≥1 7 (1.1)
Ceftriaxonea ≤1 633 (100) 2 0 ≥4 0
Tetracyclinea ≤2 511 (80.7) 4 15 (2.4) ≥8 107 (16.9)
Cotrimoxazolec ≤0.5/9.5 12 (1.9) 1/19–2/38 58 (9.2) ≥4/76 561 (88.9)
Clindamycina ≤0.25 632 (99.8) 0.5 0 ≥1 1 (0.2)
  1. *Breakpoints defined using Clinical and Laboratory Standards Institute (CLSI) guidelines 2012. For penicillin, breakpoints for oral penicillin were used
  2. a24 isolates missing information on susceptibility
  3. b30 isolates missing information on susceptibility
  4. c26 isolates missing information on susceptibility