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Table 3 Aerobic and anaerobic bacteria identified in 275 swabs of peritoneal fluid

From: Prospective Observational Study on acute Appendicitis Worldwide (POSAW)

Total N = 275
Aerobic gram-negative bacteria
Escherichia coli 159 (57.8%)
Klebsiella pneumoniae 19 (6.9%)
Klebsiella oxytoca 4 (1.5%)
Enterobacter spp. 5 (1.8%)
Proteus spp. 1 (0.4%)
Pseudomonas aeruginosa 5 (1.8%)
Aerobic gram-positive bacteria
Enterococcus faecalis 42 (15.3%)
Streptococci spp. 24 (8.7%)
Enterococcus faecium 11 (4.0%)
Staphylococcus aureus 6 (2.2%)
 Others 7 (2.5%)
Anaerobic bacteria
Bacteroides spp. 105 (38.2%)
Clostridium spp. 4 (1.5%)
  1. n number of specimens collected