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Classification of the Most Common Viruses Causing Epidemic Aseptic Meningitis or Encephalitis
| Enterovirus (gastrointestinal spread) |
| Poliovirus |
| Coxsackievirus |
| Echovirus |
| Arbovirus (arthropod-borne [insect] spread) |
| Eastern equine encephalitis |
| Western equine encephalitis |
| Venezuelan equine encephalitis |
| St. Louis encephalitis |
| California encephalitis |
