title: Emergence of novel reassortant H3N2 swine influenza viruses with the 2009 pandemic H1N1 genes in the United States.
abstract: Reassortant H1 swine influenza viruses (SIVs) carrying 2009 pandemic H1N1 virus (pH1N1) genes have been isolated from pigs worldwide. Seven novel reassortant H3N2 SIVs were identified from diseased pigs in the USA from winter 2010 to spring 2011. These novel viruses contain three or five internal genes from pH1N1 and continue to circulate in swine herds. The emergence of novel reassortant H3N2 SIVs demonstrates reassortment between pH1N1 and endemic SIVs in pigs and justifies continuous surveillance.
authors.affiliation: Department of Diagnostic Medicine and Pathobiology, Kansas State University, Mosier Hall, K233, Manhattan, KS 66506, USA.
authors.forename: Qinfang
authors.initials: Q
authors.lastname: Liu
authors.forename: Jingjiao
authors.initials: J
authors.lastname: Ma
authors.forename: Haixia
authors.initials: H
authors.lastname: Liu
authors.forename: Wenbao
authors.initials: W
authors.lastname: Qi
authors.forename: Joe
authors.initials: J
authors.lastname: Anderson
authors.forename: Steven C
authors.initials: SC
authors.lastname: Henry
authors.forename: Richard A
authors.initials: RA
authors.lastname: Hesse
authors.forename: Jürgen A
authors.initials: JA
authors.lastname: Richt
authors.forename: Wenjun
authors.initials: W
authors.lastname: Ma
mesh_terms: D000818:Animals; D016000:Cluster Analysis; D005838:Genotype; D053118:Influenza A Virus, H1N1 Subtype / Q000235:genetics*; D053122:Influenza A Virus, H3N2 Subtype / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D008969:Molecular Sequence Data; D009976:Orthomyxoviridae Infections / Q000662:veterinary* / Q000821:virology; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics; D016865:Reassortant Viruses / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D017422:Sequence Analysis, DNA; D013552:Swine; D013553:Swine Diseases / Q000821:virology*; D014481:United States
chemical_list: D012367:RNA, Viral