Newborn colonization and antibiotic susceptibility patterns of Streptococcus agalactiae at the University of Gondar Referral Hospital, Northwest Ethiopia

Table 4 Macrolide, Lincosamide-StreptograminB (MLSB) and D-shape of the GBS isolates in Northwest Ethiopia

Double disc diffusion^a
GBS phenotypes	Erythromycin (n)			Clindamycin (n)			Total (n = 32)	Percent (%)
GBS phenotypes	R, </=15mm	I, 16-20mm	S, >/=21mm	R,</=15mm	I,16-18mm	S,>/=19mm	Total (n = 32)	Percent (%)
constitutive macrolide, lincosmide-streptogramin B (cMLSB)	7	0	-	6	1	-	7	21.9
inducible macrolide, lincosmide-streptogramin B (iMLSB)	4	0	-	0	0	4	4	12.5
M-phenotype	6	4	-	-	-	10	10	31.3
L-Phenotype	-	-	11	7	4	-	11	34.4
D – Shape positive	4	0	0	-	-	4	4	12.5
D – Shape negative	-	-	-	-	-	-	28	87.5

^aCLSI (2017) disk diffusion breakpoints [57]. For erythromycin: ≥21 mm, susceptible (S); 16 to 20 mm, intermediate (I); ≤15 mm, resistant (R). For clindamycin: ≥19 mm, susceptible (S); 16 to 18 mm, intermediate (I); ≤15 mm, resistant (R)

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