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Table 4 Percentage of Positive Results on 1st CSF Culture, and Results of Blood Cultures by Organism

From: A systematic review of cases of meningitis in the absence of cerebrospinal fluid pleocytosis on lumbar puncture

Organism

Bacterial

1st CSF culture

Blood culture

Positive

Negative

Unknown

Positive

Negative

Sensitivity

Total

Initial

S. pneumoniae

18

4

82%

12

12

3

7

N. meningitidis

21

4

84%

16

16

6

3

H. influenzae

12

5

71%

12

9

1

4

L. monocytogenes

1

2

33%

3

3

0

0

Acenobacter

1

0

100%

0

0

0

1

C. septicum

1

0

100%

1

1

0

0

Clostridium sp.

1

0

100%

1

1

0

0

Bacteroides sp

E. coli

5

2

71%

6

6

0

1

Enterbacter

1

0

100%

0

0

1

0

Enterococcus

2

0

100%

0

0

2

0

Gram + Cocci

3

0

100%

1

1

2

0

Group B Streptococcus

6

0

100%

2

2

2

2

M. polymorpha

1

0

100%

0

0

0

1

M. tuberculosis

1

1

50%

0

0

0

2

P. aeruginosa

2

0

100%

0

0

2

0

P. Mirabilis

1

0

100%

1

1

0

0

S. aureus

2

0

100%

0

0

2

0

S. bovis

1

0

100%

0

0

0

1

S. parasanguinis on 1st culture, S. pneumoniae on 2nd culture

1

0

N/A

0

0

0

1

Organism

Fungal

 

Blood culture

1st CSF culture

Positive

 

Positive

Negative

% Positive

Total

Initial

Negative

Unknown

Cryptococcus

6

1

86%

1

1

0

6

A. niger

1

0

100%

0

0

0

1

C. albicans

1

0

100%

0

0

1

0

Organism

Viral

 

Blood culture

1st CSF PCR

Positive

 

Positive

Negative

% Positive

Total

Initial

Negative

Unknown

Enterovirus

12

0

100%

0

0

0

12

Echovirus type 3

1

0

100%

0

0

0

1

Echovirus type 9

1

0

100%

0

0

0

1

Adenovirus type 3

1

0

100%

0

0

0

1

Herpes Simplex 1

1

0

100%

0

0

1

0