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

Gram-positive ^a

90

44

27

25

18

Streptococcus pneumonia

29

14

20^b

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

3^c

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