Aseptic meningitis epidemic due to ECHO 4 virus.
D002648:Child; D029822:Enterovirus B, Human; D058872:Epidemics; D007223:Infant; D008581:Meningitis; D008582:Meningitis, Aseptic; D014777:Virus Diseases
MENINGITIS/in infancy and childhood; VIRUS DISEASES/in infancy and childhood