[Etiological study on two acute cases of sporadic viral encephalitis].
D000208:Acute Disease; D000293:Adolescent; D002675:Child, Preschool; D004457:Echovirus Infections / Q000209:etiology*; D004660:Encephalitis / Q000209:etiology*; D029822:Enterovirus B, Human / Q000302:isolation & purification; D005260:Female; D006801:Humans; D008297:Male