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Table 4 Antibiotic resistance of invasive GBS isolates in different serotypes and STs

From: Epidemiology of invasive group B streptococcal disease in infants from urban area of South China, 2011–2014

  Serotypes Sequence types
Ia (n = 2) Ib (n = 10) III (n = 53) V (n = 3) Total (n = 68) ST-17 (n = 43) Non-ST-17 (n = 25)
Penicillin 0 0 0 0 0 0 0
Ceftriaxone 0 0 0 0 0 0 0
Vancomycin 0 0 0 0 0 0 0
Linezolid 0 0 0 0 0 0 0
Ofloxacin 0 1 (10.0%) 3 (5.7%) 0 4 (5.9%) 0 4 (16.0%)a
Sulfamethoxazole 0 1 (10.0%) 1 (1.9%) 0 2(2.9%) 1 (2.3%) 1 (4.0%)
Tetracycline 2 (100.0%) 9 (90.0%) 51 (96.2%) 3 (100.0%) 65 (95.6%) 42 (97.7%) 23 (92.0%)
Erythromycin 1 (50%) 5 (50%) 31 (58.5%) 2 (66.7%) 39(57.4%) 26 (60.5%) 11 (44.0%)
Clindamycin 0 5 (50%) 28 (52.8%) 2 (66.7%) 35(51.5%) 25 (58.1%) 9 (36.0%)
  1. aCompared to ST-17 isolates, X2 = 4.706, P = 0.030, 3/4(75.0%) ST-19 were resistant to ofloxacin