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Table 5 Susceptibility of gram-positive bacterial species to selected antimicrobial agents

From: Aerobic bacteria associated with chronic suppurative otitis media in Angola

Antimicrobial agent Susceptibility1 S. pneumoniae S. pyogenes S. aureus
(N = 32) (N = 9) (N = 13)
   N (%) N (%) N (%)
Benzylpenicillin S 15 (46.9) 9 (100)   
  R 17 (53.1)     
Cefoxitin2 S      6 (46.2)
  R      7 (53.8)
Norfloxacin3 S 32 (100)    9 (69.2)
  R      4 (30.8)
Tobramycin S      4 (30.8)
  R      9 (69.2)
Erythromycin S 32 (100) 9 (100) 12 (92.3)
  R      1 (7.7)
Clindamycin S 32 (100) 9 (100) 11 (84.6)
  I      1 (7.7)
  R      1 (7.7)
Tetracycline S 24 (75) 3 (33.3)   
  I 1 (3.1)     
  R 7 (21.9) 6 (66.7)   
Fusidic acid S      13 (100)
Rifampicin S 27 (84.4)     
  R 5 (15.6)     
Trimethoprim-sulfamethoxazole S 6 (18.8)    13 (100)
I 1 (3.1)     
  R 25 (78.1)     
  1. 1 S, susceptible; I, intermediate; R, resistant
  2. 2 Screening substance for methicillin resistance
  3. 3 Screening substance for quinolone resistance