Table 1 Antimicrobial susceptibility profiles for 44 macrolide resistant S. pneumoniae isolates by disk diffusion or E-test

Antimicrobial test

Susceptible

Intermediate

Resistant

Disk Diffusion

Chloramphenicol (C)

n = 43 (97.72%)

n = 0 (0%)

n = 1 (2.27%)

Sulfamethoxazole-Trimethoprim (SXT)

n = 12 (27.27%)

n = 1 (2.27%)

n = 31 (70.45%)

Tetracycline (TE)

n = 10 (22.72%)

n = 1 (2.27%)

n = 33 (75%)

E-test

Penicillin (PG)

n = 9 (20.45%)

n = 21 (47.73%)

n = 14 (31.82%)

Ceftriaxone (TX)

n = 26 (59.09%)

n = 13 (29.55%)

n = 5 (11.36%)