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Table 3 Macrolide, lincosamide–streptogramin B (MLSB) and inducible clindamycine resistance GBS isolates, Northwest Ethiopia (n = 46)

From: Streptococcus agalactiae from Ethiopian pregnant women; prevalence, associated factors and antimicrobial resistance: alarming for prophylaxis

Double disc diffusion
GBS phenotypesa Erythromycin (n) Clindamycin (n) Total (n = 46) Percent (%)
R I S R I S
Constitutive macrolide, lincosamide–streptogramin B (cMLSB) 10 2 9 3 12 26.1
inducible macrolide, lincosamide–streptogramin B (iMLSB) 6 1 7 7 15.2
M-phenotype 10 3 13 13 28.3
L-phenotype 14 12 2 14 30.4
D-shape positive 6 1 0 7 7 15.2
D-shape negative 39 84.8
  1. aCLSI disk diffusion breakpoints [18]. Erythromycin: ≥ 21 mm, susceptible (S); 16 to 20 mm, intermediate (I); ≤ 15 mm, resistant (R). Clindamycin: ≥ 19 mm, susceptible (S); 16 to 18 mm, intermediate (I); ≤ 15 mm, resistant (R)