(b)
| Primary source of infection | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Location | ASOM | CSOM | PNS | CHD | Sepsis | Odont | Pulm | Trauma | Op trauma | Misc | Crypto | Total |
| Parietal | — | 4 | — | 11 | 17 | 1 | 1 | 9 | 14 | 1 | 23 | 80 |
| Frontal | — | 20 | 6 | 3 | 4 | — | 1 | 2 | 4 | — | 33 | 73 |
| Temporal | — | 46 | 2 | 3 | 3 | 1 | — | 1 | 2 | 3 | 11 | 72 |
| Cerebellar | 1 | 15 | — | — | 1 | — | 1 | — | — | 2 | 2 | 22 |
| Occipital | — | 5 | — | 1 | — | — | — | — | — | — | 2 | 8 |
| Subdural | — | 1 | — | — | 2 | — | — | — | — | — | — | 3 |
| Epidural | — | — | — | — | 3 | — | — | — | — | — | — | 3 |
| Thalamus | — | — | — | — | — | — | — | 1 | — | — | — | 1 |
| Medullary | — | — | — | — | — | — | — | — | — | — | 1 | 1 |
| Total | 1 | 91 | 8 | 18 | 30 | 2 | 3 | 13 | 20 | 6 | 71 | 263 |
ASOM: acute suppurative otitis media, CSOM: chronic suppurative otitis media, PNS: paranasal sinusitis, CHD: congenital heart disease, Odont: odontogenic, Pulm: pulmonary, Op trauma: operative trauma, Misc: miscellaneous, and Crypto: cryptogenic.
E. hystolytica and Acanthamoeba cases not included in analysis.