Volume 22, Number 3—March 2016
Research
Encephalitis, Ontario, Canada, 2002–2013
Alyssa S. Parpia1, Ye Li, Cynthia Chen, Badal Dhar, and Natasha S. Crowcroft
Table 2
Cause of encephalitis in immunocompromised patients, Ontario, Canada, 2002–2013
| Encephalitis cause | Total encephalitis cases, no. (%), N = 6,463 | Immunocompromising condition, no. (%), n = 938 |
|||
|---|---|---|---|---|---|
| HIV, n = 262 | Other immunodeficiency, n = 32 | Transplant, n = 116 | Cancer, n = 613 | ||
| Unknown | 3,299 (51.0) | 45 (17.2) | 9 (28.1) | 42 (36.2) | 176 (28.7) |
| Viral | 1,788 (27.7) | 134 (51.2) | 13 (40.6) | 52 (44.8) | 172 (28.1) |
| Immune mediated | 657 (10.2) | 3 (1.2) | 5 (15.6) | 7 (6.0) | 197 (32.1) |
| Other | 466 (7.2) | 11 (4.2) | 2 (6.3) | 5 (4.3) | 42 (6.9) |
| Bacterial | 152 (2.4) | 7 (2.7) | 0 | 2 (1.7) | 13 (2.1) |
| Amebic/parasitic/fungal | 92 (1.4) | 60 (22.9) | 3 (9.4) | 8 (6.9) | 12 (2.0) |
| Unable to classify |
9 (0.1) |
2 (0.8) |
0 |
0 |
1 (0.2) |
| Total | 6,463 | 262 (27.9) | 32 (3.4) | 116 (12.4) | 613 (65.4) |
1Current affiliation: Yale School of Public Health, New Haven, Connecticut, USA.
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