US Centers for Disease Control and Prevention.

The etiology of acute febrile encephalopathy varies from infectious etiologies to noninfectious metabolic disorders. There are no distinguishing clinical or radiological features to differentiate the various causes of viral encephalitis. The clinical and the radiological findings in encephalitis should be interpreted in the geographical and other epidemiological background.

Enterovirus 71, the major etiology of VE in our study, was associated with significant mortality and morbidity. Such studies should be conducted frequently to assess the role of emerging VE in different regions.