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Table 2 Organisms isolated from blood and/or cerebrospinal fluid from 209 neonates during the first 7 days of life between 1997 and 2017 according to gestational week

From: Changes in incidence and etiology of early-onset neonatal infections 1997–2017 – a retrospective cohort study in western Sweden

 Gestational age (weeks)
Type of organism, n (%)<  2829–36≥ 37Total
Gram-pos bacteria:
 Group B Streptococci9 (24.3)23 (38.3)52 (46.4)84 (40.2)
Staphylococcus aureus7 (18.9)8 (13.3)18 (16.1)33 (15.8)
Enterococcus spp0 (0)0 (0)12 (10.7)12 (5.7)
 Pneumococci0 (0)3 (5.0)3 (2.7)6 (2.9)
 Coagulase-neg Staphylococcia10 (27.0)8 (13.3)0 (0)18 (8.6)
Listeria monocytogenes1 (2.7)3 (5.0)0 (0)4 (1.9)
 Other Gram-pos bacteria0 (0)1 (1.7)2 (1.8)3 (1.4)
Gram-neg bacteria:
Escherichia coli3 (8.1)3 (5.0)12 (10.7)18 (8.6)
Klebsiella pneumoniae3 (8.1)1 (1.7)2 (1.8)6 (2.9)
Klebsiella oxytoca0 (0)2 (3.3)0 (0)2 (1.0)
Haemophilus influenzae0 (0)3 (5.0)2 (1.8)5 (2.4)
Enterobacter spp0 (0)0 (0)2 (1.8)2 (1.0)
Serratia Marcescens2 (5.4)1 (1.7)0 (0)3 (1.4)
Pseudomonas spp0 (0)2 (3.3)4 (3.6)6 (2.9)
 Other Gram-neg. Bacteria0 (0)2 (3.3)3 (2.7)5 (2.4)
Fungi:
Candida albicans2 (5.4)0 (0)0 (0)2 (1.0)
Total37 (100)60 (100)112 (100)209 (100)
  1. a including e.g. S. epidermidis, S. hominis, S. capitis, Beta-hemolytic streptococci group A and C, Actinomyces spp.
  2. Burkholdeira cepacia, Neisseria meningitidis, Bacteroides spp., Proteus mirabilis (fatal case)