Journal article

Surveillance and Analysis of Avian Influenza Viruses, Australia

Philip M Hansbro, Simone Warner, John P Tracey, K Edla Arzey, Paul Selleck, Kim O'Riley, Emma L Beckett, Chris Bunn, Peter D Kirkland, Dhanasekaran Vijaykrishna, Bjorn Olsen, Aeron C Hurt



We investigated carriage of avian influenza viruses by wild birds in Australia, 2005-2008, to assess the risks to poultry industries and human health. We collected 21,858 (7,357 cloacal, 14,501 fecal) samples and detected 300 viruses, representing a detection rate of ≈1.4%. Rates were highest in autumn (March-May) and differed substantially between bird types, areas, and years. We typed 107 avian influenza viruses and identified 19 H5, 8 H7, and 16 H9 (40% of typed viruses). All were of low pathogenicity. These viruses formed clearly different phylogenetic clades to lineages from Eurasia or North America, suggesting the potential existence of Australian lineages. H7 viruses were similar to h..

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Awarded by National Health and Medical Research Council of Australia

Funding Acknowledgements

Funding was provided by the National Health and Medical Research Council of Australia (project grant no 401134), the Wildlife and Exotic Diseases Preparedness Program the Department of Agriculture Forestry and Fisheries, Australia, the Invasive Animals Cooperative Research Centre, the Swedish Research Council, the Swedish Research Council for Spatial Planning, and European Union project New FluBird The World Health Organization Collaborating Centre for Reference and Research on Influenza is supported by the Australian Government Department of Health and Ageing