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Volume 15, Number 9—September 2009

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)

Main Article

Table 1

Comparison of 8 gene segments of avian influenza virus (H7N3) A/chicken/Saskatchewan/HR-00011/2007 with influenza virus genes from GenBank with highest sequence identity, Saskatchewan, Canada, 2007*

Gene Nucleotide identity % Amino acid identity %
PB2 A/laughing gull/Delaware/42/2006 (H7N3) 98 A/mallard/Ohio/656/2002 (mixed) 98
PB1 A/mallard/Alberta/149/2002 (H2N4) 98 A/mallard/Alberta/149/2002 (H2N4) 99
PA A/snow goose/Maryland/353/2005 (H6N1) 98 A/mallard/Ohio/249/98 (H6N1) 99
H7 A/mallard/Delaware/418/2005 (H7N3) 96 A/environment/Maryland/566/2006 (H7N9) 97
NP A/environment/Maryland/1176/2005 (H3N6) 98 A/GSC_chicken/British Columbia/2004 (H7N3) 99
N3 A/mallard/Delaware/418/2005 (H7N3) 98 A/environment/Maryland/261/2006 (H7N3) 98
M1 A/mallard/Maryland/1131/2005 (H12N5) 98 A/chicken/Korea/S6/2003 (H3N2) 98
M2 A/chicken/Singapore/93 (H10N5) 98 A/mallard duck/Alberta/376/85 (H2N3) 98
NS1 A/mallard/Alberta/30/2001 (H4N8) 98 A/pintail/Alaska/779/2005 (H3N8) 98
NS2 A/blue-winged teal/Louisanna/240B/88 (H4N6) 99 A/mallard/Delaware/418/2005 (H7N3) 98

*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.

Main Article

Page created: December 07, 2010
Page updated: December 07, 2010
Page reviewed: December 07, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.