Emerging Infectious Disease ISSN: 1080-6059

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 Pasick

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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Figure 1

Avian influenza virus H7-specific antibody titers of serum samples from 55-week-old breeder chickens (A), 24-week-old roosters (B), and 32-week-old breeder chickens (C), Saskatchewan, Canada, September 26, 2007. Titers of individual birds were determined by the ability of 2-fold serial serum dilutions to inhibit agglutination 0.5% (vol/vol) chicken erythrocyte suspensions by 4 hemagglutination inhibition units of avian influenza virus (H7N3) A/chicken/British Columbia/2004.

Figure 1. Avian influenza virus H7-specific antibody titers of serum samples from 55-week-old breeder chickens (A), 24-week-old roosters (B), and 32-week-old breeder chickens (C), Saskatchewan, Canada, September 26, 2007. Titers of individual birds were determined by the ability of 2-fold serial serum dilutions to inhibit agglutination 0.5% (vol/vol) chicken erythrocyte suspensions by 4 hemagglutination inhibition units of avian influenza virus (H7N3) A/chicken/British Columbia/2004.

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