Table 4

Bacterial pathogens
Bacterial pathogens No. of isolates %
Streptococcus species 55 54%
Streptococcus milleri group 32
Streptococcus oralis/sanguis 3
Group A streptococcus 1
Streptococcus pneumoniae 4
Streptococcus bovis 1
Streptococcus species 14
Staphylococci 16 15%
Staphylococcus aureus 14
Coagulase-negative staphylococci 2
Gram-negative bacteria 8 8%
E.coli 2
Haemophilus spp. 5
Pseudomonas 1
Anaerobic bacteria 17 17%
Fusobacteria 4
Actinomyces 2
Prevotella 2
Peptostreptococci 2
Other anerobic bacteria 7
Nocardia 2 2%
Other species 4 4%
Negative culture, n= patients 14 14%
Mixed bacterial pathogens 11 11%
Primary microscopy compatible with several different bacterial species 23 23%
Positive gram-stain from pus/CSF 64 64%
Gram-stain positive/negative culture 4/65
Negative gram-stain and positive culture 18
Negative culture from brain pus 7

Helweg-Larsen et al.

Helweg-Larsen et al. BMC Infectious Diseases 2012 12:332   doi:10.1186/1471-2334-12-332

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