Identification of a cytopathogenic agent called U-virus recovered from patients with non-diphtheritic croup and from day-nursery children.
D003440:Croup / Q000382:microbiology*; D006801:Humans; D009724:Nurseries, Infant; D011051:Poliomyelitis / Q000276:immunology*; D014780:Viruses
CROUP/microbiology; POLIOMYELITIS/immunology; VIRUSES