Abstract
ObjectiveTo demonstrate seroprevalence of avian invluenza (H9N2) subtybe in broiler chickens in Northwest of Iran. MaterialsA total of 310 blood samples were collected from 25 broiler flocks in slaughterhouses of West Azarbayjan, Iran. Serum samples were subjected to haemagglutination inhibition test. ResultsThe test showed 40.6% of positive serums. Mean antibody titer of avian influenza virus differed between geographical locations in this survey. ConclusionsHigh prevalence of avian influenza virus antibodies in serum of birds emphasize that avian influenza has an important role in respiratory complexes in broiler chickens in this region, and probably throughout Iran. Biosecurity measures, monitoring and surveillance programs, and to some degree vaccination are effective tools to prevent introduction of H9N2 infection and its economic losses.
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