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Volume 15, Number 9—September 2009

Dispatch

Highly Pathogenic Avian Influenza Virus A (H7N3) in Domestic Poultry, Saskatchewan, Canada, 2007

Yohannes Berhane, Tamiko Hisanaga, Helen Kehler, James Neufeld, Lisa Manning, Connie Argue, Katherine Handel, Kathleen Hooper-McGrevy, Marilyn Jonas, John Robinson, Robert G. Webster, and John PasickComments to Author 
Author affiliations: Canadian Food Inspection Agency, Winnipeg, Manitoba, Canada (Y. Berhane, T. Hisanaga, H. Kehler, J. Neufeld, L. Manning, C. Argue, K. Handel, K. Hooper-McGrevy, J. Pasick); Prairie Diagnostic Services, Saskatoon, Saskatchewan, Canada (M. Jonas); British Columbia Ministry of Agriculture and Lands, Abbotsford, British Columbia, Canada (J. Robinson); St. Jude Children’s Research Hospital, Memphis, Tennessee, USA (R.G. Webster)

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Table 2

Comparison of 8 gene segments of avian influenza virus (H7N3) A/chicken/Saskatchewan/HR-00011/2007 with 2 recent viruses (H7N3) isolated from wild waterfowl, Saskatchewan, Canada, 2007*

Gene A/American black duck/New Brunswick/2538/2007
A/Canada goose/British Columbia/3752/2007
% nt identitiy % aa identity % nt identity % aa identity
PB2 92 97.8 92 97.8
PB1 97 99.2 97 99.1
PA 98 95.5 97 95.4
H7 96 96.3 97 97
NP 94 97.4 94 97.2
N3 96 98.3 98 98.3
M1 96 98.8 97 98.8
M2 98 97.9 99 100
NS1 80 68.7 80 69.1
NS2 80 82.5 80 82.5

*GenBank accession nos. EU500841–EU500864. PB2, RNA polymerase subunit B2; PB1, RNA polymerase subunit B1; PA, RNA polymerase subunit A; H7, hemagglutinin 7; NP, nucleoprotein; N3, neuraminidase 3; M1, matrix protein 1; M2, matrix protein 2; NS1, nonstructural protein 1; NS2, nonstructural protein 2.

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