Many<unk>  infections of the central<unk>  system occur in seasonal peaks or as epidemics, whereas others, such as herpes simplex encephalitis, are sporadic. In endemic areas it is mostly a<unk>  of children, but as the<unk>  spreads to new regions, or nonimmune travelers visit endemic regions, nonimmune adults are also affected. eeee
Central nervous system viral disease
CNS demyelinating autoimmune diseases
Hereditary CNS demyelinating disease
Central nervous system tumor
Viral encephalitis
Autoimmune encephalitis
Primary and secondary brain injury
Primary central nervous system lymphoma