["New" virus infections are not always signs of disease].
Nielsen
J O
JO
D004266:DNA Virus Infections / Q000175:diagnosis; D004267:DNA Viruses / Q000145:classification / Q000302:isolation & purification / Q000472:pathogenicity; D006801:Humans; D012327:RNA Virus Infections / Q000175:diagnosis; D012328:RNA Viruses / Q000145:classification / Q000302:isolation & purification / Q000472:pathogenicity