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Table 3 Distribution of resistance phenotypes and genotypes across serotypes among erythromycin-resistant GBS

From: Prevalence, population structure, distribution of serotypes, pilus islands and resistance genes among erythromycin-resistant colonizing and invasive Streptococcus agalactiae isolates recovered from pregnant and non-pregnant women in Isfahan, Iran

  Ia Ib II III IV V VI VII Total
N(%)of resistant strain 6 (20) 3 (10) 1 (3.3) 13 (43.3) 2 (6.6) 3 (10) 1 (3.3) 1 (3.3) 30 (100)
ermB 5 (23.8) 3 (14.2) 1 (4.7) 6 (28.5) 2 (9.5) 3 (14.2) 1 (2.8) 21 (70)
ermTR 5 (71.4) 1 (14.2) 1 (14.2) 7 (23.3)
mefA 1 (33.3) 2 (66.6) 3 (10)
cMLSB 5 2 1 4 2 3 1 18 (60)
iMLSB 1 7 1 9 (30)
M 1 2 3 (10)