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Table 2 Microbiological aetiology in community acquired severe sepsis (n)

From: Aetiology, antimicrobial therapy and outcome of patients with community acquired severe sepsis: a prospective study in a Norwegian university hospital

  Total Blood Urine Abscess drainage Other
Gram-positive a 90 44 27 25 18
Streptococcus pneumonia 29 14 20b 0 5
Alpha hemolytic streptococci 18 7 0 6 7
Group A/C/G streptococci 13 6 0 9 1
Group B streptococci 2 1 0 1 0
Enterococci 6 3 2 0 2
Staphylococcus aureus 20 11 4 9 3
Staphylococcus caprae 1 1 0 0 0
Aerococcus viridans 1 1 1 0 0
Gram-negative a 55 32 21 8 9
Escherichia coli 27 19 13 3 3
Klebsiella 10 6 5 0 1
Enterobacter 1 1 0 0 0
Proteus 2 0 0 1 1
Other Enterobacteriaceae 5 2 3 1 0
Pseudomonas aeruginosa 2 1 0 1 1
Stenotrophomonas maltophilia 1 0 0 1 0
Neisseriae meningitides 2 2 0 0 0
Haemophilus influenzae 2 1 0 0 1
Haemophilus parainfluenzae 2 0 0 0 2
Unspecified gram negative rods 1 0 0 1 0
Anaerobic bacteria 17 6 0 3 9
Clostridium species 5 2 0 0 3c
Bacteroides species 5 3 0 1 2
Prevotella 4 0 0 2 2
Slackia exigua 1 1 0 0 0
Fusobacterium 1 0 0 0 1
Unspecified gram positive rods 1 0 0 0 1
Other 9 0 0 3 6
Candida species 7 0 0 3 4
Aspergillus species 1 0 0 0 1
Influenzavirus A 1 0 0 0 1
Patients with ≥1 positive test 129 74 40 23 29
  1. Unless otherwise specified, numbers shown are all isolated microorganisms in category.
  2. aAnaerobic species not included.
  3. bPositive antigen tests in all 20 cases (14 cases were detected in antigen tests only).
  4. cDetection of Clostridium difficile toxin A in all cases.