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Bacteriology of CSF on admission
| Organism | CSF Gram stain (n = 48) | Culture (n = 48) |
| Streptococcus pneumoniae (n [%]) | 12 (25) | 21 (44) |
| Neisseria meningitidis (n [%]) | 6 (12) | 9 (19) |
| Other streptococci (n [%]) | 0 | 5 (10) |
| Listeria monocytogenes (n [%]) | 0 | 6 (13) |
| Haemophilus influenzae (n [%]) | 0 | 2 (4) |
| Escherichia coli (n [%]) | 0 | 1 (2) |
| Staphylococcus aureus (n [%]) | 0 | 1 (2) |
| Total (n [%]) | 18 (38) | 45 (94) |
CSF, cerebrospinal fluid.
