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Animals > Animal Diseases > Avian Influenza > British Columbia (2004)  

The Source and Means of Spread of the Avian Influenza Virus in the Lower Fraser Valley of British Columbia During an Outbreak in the Winter of 2004

An Interim Report
February 15, 2005

Dr. Christine Power
Animal Disease Surveillance Unit
Canadian Food Inspection Agency

Table of Contents

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1 Executive Summary
2 Introduction
3 Source of the Virus on the Matsqui Prairie
3.1 Waterfowl Versus Domestic Poultry as the Source
3.2 The Genetic Profile of the LPAI Virus
4 Considerations in the Spread of the Avian Influenza Virus from an Infected Premises to a Susceptible Flock
4.1 Transmission Through Poultry Manure/Litter (Sawdust)
4.1.1 Background
4.1.2 Biosecurity Recommendations for the Poultry Industry
4.2 Transmission Through Water
4.2.1 Background
4.2.2 Biosecurity Recommendations to the Poultry Industry
4.3 Transmission Through Feeds
4.3.1 Background
4.3.2 Biosecurity Recommendations to the Poultry Industry
4.4 Transmission through Aerosol/Airborne Dust Dispersion
4.4.1 Background
4.4.2 Biosecurity Recommendations to the Poultry Industry
4.5 Transmission Through CFIA Activities
4.5.1 Visits to farms
4.5.2 Dispersion of feathers and dust during disposal activities on the first two infected premises
4.5.3 Dispersion through transportation of infected poultry by trucks
4.5.4 Management of leakage from trailers on a Richmond industrial site
4.5.5 The CFIA’s presumed part in the spread of disease
4.6 Ranking of Relative Importance of Possible Routes of Transmission
4.6.1 Preventing the introduction of avian influenza onto farms
4.6.2 Preventing the spread of avian influenza from farm to farm during an outbreak
5 Next Steps
5.1 Measuring avian influenza prevalence in domestic poultry and migratory waterfowl
5.2 Evaluating the role of poultry service providers in disease transmission
5.3 Evaluating the role of windborne spread in disease transmission
5.4 Assessment of the role of backyard flocks in the spread of avian influenza
5.5 Summary list of planned analyses, surveys and studies
6 List of Investigation Reports and Contributors
7 Acknowledgements
8 List of Reviewers


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