PCR results for the first CSF sample obtained in each clinical episode
| HSV-1 | HSV-2 | HSV untyped | VZV | CMV | EBV | HHV-6 | Entero-virus | JCV | T gondii | Multiple viruses | PCR positive | PCR negative | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| *Multiple PCR findings included: EBV and VZV, enterovirus and HHV-6, and HSV-1, CMV, and VZV; †multiple PCR findings included: two CSF samples with HSV-1 and EBV; ‡multiple PCR findings included: two CSF samples with HSV-2 and enterovirus, one with EBV and HHV-6, and one with EBV and CMV. | |||||||||||||
| Group with detailed clinical information (n = 494) | |||||||||||||
| Likely CNS viral infection | 0 | 6 | 1 | 1 | 1 | 1 | 2 | 16 | 1 | 0 | 3* | 32 | 76 |
| subgroup (n = 108) | |||||||||||||
| Possible CNS viral infection | 1 | 0 | 1 | 0 | 2 | 2 | 2 | 2 | 0 | 0 | 2† | 12 | 83 |
| subgroup (n = 95) | |||||||||||||
| Unlikely CNS viral infection | 2 | 0 | 0 | 0 | 1 | 9 | 1 | 2 | 0 | 0 | 0 | 15 | 276 |
| subgroup (n = 291) | |||||||||||||
| Group for which detailed clinical | 4 | 2 | 0 | 2 | 2 | 6 | 4 | 3 | 1 | 1 | 4‡ | 29 | 230 |
| information not available (n = 259) | |||||||||||||
| Total (n = 753) | 7 | 8 | 2 | 3 | 6 | 18 | 9 | 23 | 2 | 1 | 9 | 88 | 665 |