Table 3.

Susceptibility profile of GBS isolates by E test (n = 128)

Antibiotic	MIC (µg/ml)
	Range	50 % of isolates	90 % of isolates	Break pointa (susceptible)	% Of isolates resistant
Penicillin	0.002–32	0.012	0.047	≤0.12	–
Erythromycin	0.016–256	0.16	8	≤0.25	21.1
Clindamycin	0.016–256	0.16	8	≤0.25	17.2

^aCLSI guidelines 2012