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Table 1 Demographics of infants with invasive GBS infection in urban area of South China, 2011–2014

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

  Early-onset Disease (n = 49) Late-onset Disease (n = 21) Total (n = 70)
Sex (female/male) 16/33 12/9 28/42
Preterm (gestational age < 37 weeks) 7 (14.3%) 4 (19.0%) 11 (15.7%)
Low birth weight (<2500 g) 5 (10.2%) 4 (19.0%) 9 (12.9%)
Bacterial isolation site
 Blood alone 46 (93.9%) 16 (76.2%) 62 (88.6%)
 CSF+blooda 2 (4.1%) 0 2 (2.9%)
 CSF alone 1 (2.0%) 5 (23.8%)b 6 (8.6%)
Incidence (per 1000 live births,95%CI) 0.39 (0.29–0.51) 0.16 (0.11–0.25) 0.55 (0.44–0.69)
Clinical outcomes
 Died 4 (8.2%) 1 (4.8%) 5 (7.1%)
 Survived with sequelae 2 (4.1%) 3 (14.3%) 5 (7.1%)
  1. aCSF cerebrospinal fluid;
  2. bCompared with early-onset disease, Fisher exact test, X2 = 6.3281, P = 0.0119