title: Preferential lower respiratory tract infection in swine-origin 2009 A(H1N1) influenza.
abstract: We report a case of 2009 influenza A(H1N1) virus infection in which virus was detected predominantly in specimens from the lower respiratory tract but was absent or at very low levels in nasopharyngeal swab samples. This presentation suggests that, in certain hosts or for particular variants of 2009 A(H1N1) virus, the lower respiratory tract may be the preferred site of infection.
authors.affiliation: Departments of Pathology, Stanford University School of Medicine, Stanford, California 94305-5324, USA.
authors.forename: Ellen
authors.initials: E
authors.lastname: Yeh
authors.forename: Robert F
authors.initials: RF
authors.lastname: Luo
authors.forename: Laurale
authors.initials: L
authors.lastname: Dyner
authors.forename: David K
authors.initials: DK
authors.lastname: Hong
authors.forename: Niaz
authors.initials: N
authors.lastname: Banaei
authors.forename: Ellen Jo
authors.initials: EJ
authors.lastname: Baron
authors.forename: Benjamin A
authors.initials: BA
authors.lastname: Pinsky
mesh_terms: D000818:Animals; D002648:Child; D005260:Female; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification*; D007251:Influenza, Human / Q000473:pathology* / Q000821:virology*; D008168:Lung / Q000821:virology*; D008297:Male; D009305:Nasopharynx / Q000821:virology; D012137:Respiratory System / Q000821:virology*