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Volume 17, Number 6—June 2011

Dispatch

Reassortant Pandemic (H1N1) 2009 Virus in Pigs, United Kingdom

Wendy A. Howard, Steve C. Essen, Benjamin W. Strugnell, Christine Russell, Laura Barrass, Scott M. Reid, and Ian H. BrownComments to Author 
Author affiliations: Author affiliations: Veterinary Laboratories Agency–Weybridge, Addlestone, UK (W.A. Howard, S.C. Essen, C. Russell, L. Barrass, S.M. Reid, I.H. Brown); Veterinary Laboratories Agency–Thirsk, Thirsk, UK (B.W. Strugnell)

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Table 1

Genotypes of influenza virus subtype H1N2 and H1N1 isolates from pigs, United Kingdom, 2009–2010*

Virus Date of sampling Subtype Gene segment
PB2 PB1 PA HA NP NA M NS
A/swine/England/236/09 2009 Sep 28 H1N2 A A A H A H A A
A/swine/England/1157/09 2009 Oct 5 H1N2 A A A H A ND A A
A/swine/England/1428/09 2009 Dec 8 H1N2 A A A H A H A A
A/swine/England/523/10 2010 Jan 4 H1N2 A A A H A H A A
A/swine/England/1382/10† 2010 Apr 13 H1N2 P P P H P H P P
A/swine/England/1389/10 2010 Apr 15 H1N1 A A A A A A A A
A/swine/England/73690/10 2010 Jun 23 H1N1‡ P P P P P P P P

*PB, basic polymerase; PA, acidic polymerase; HA, hemagglutinin; NP, nucleoprotein, NA, neuraminidase; M, matrix; NS, nonstructural; A, genes with closest homology to European avian-like swine influenza viruses (H1N1); H, genes with closest homology to European swine influenza viruses (H1N2); ND, gene not sequenced but typed as N2 by using standard NA inhibition assay; P, genes with closest homology to pandemic (H1N1) 2009 virus. Closest matching homologous genes were determined by analyzing nucleotide sequences (minimum of 180 bases) against the National Center for Biotechnology Information GenBank database (http://blast.ncbi.nlm.nih.gov). GenBank accession nos. JF290388–JF290395 and JF297995–JF298002.
†A/swine/England/1382/10 reassortant virus.
‡Pandemic (H1N1) 2009 virus.

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