[Approach to viral diseases of unknown etiology].
D000260:Adenoviruses, Human / Q000302:isolation & purification; D002675:Child, Preschool; D003556:Cystitis / Q000382:microbiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009080:Mucocutaneous Lymph Node Syndrome / Q000382:microbiology*; D012136:Respiratory Syncytial Viruses / Q000302:isolation & purification*