Table 7. Laboratory confirmed aetiology for patients meeting the case definition of viral encephalitis/meningitis enrolled in the study (excluding dual infections).
| Pathogen, n (%) | Adults (n = 209) | Children (n = 432) | p value1 |
| JE virus | 11 (5) | 142 (33) | <0.001 |
| Dengue virus | 23 (11) | 14 (3) | <0.001 |
| Enteroviruses | 20 (10) | 36 (8) | 0.603 |
| Herpes simplex | 22 (11) | 14 (3) | <0.001 |
| Unknown aetiology2 | 133 (64) | 226 (52) | 0.007 |
1
Chi-squared test or Fisher’s exact test (when one or more of the expected count is less than 5).
2
“Unknown aetiology” corresponds to the probable cases.