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Avian Influenza Testing In Birds in California

Avian Influenza Testing In Birds in California. Ben Sun, DVM, MPVM 916-552-9740 bsun@dhs.ca.gov California Department of Health Services. Ecology and Epidemiology. Key: Exposure to Domestic Waterfowl. LPAIV. Exposure Adaptation. Asian H5N1 HPAIV. Re-adaptation. HPAIV (H5/H7). HA

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Avian Influenza Testing In Birds in California

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  1. Avian Influenza Testing In Birds in California Ben Sun, DVM, MPVM 916-552-9740 bsun@dhs.ca.gov California Department of Health Services

  2. Ecology and Epidemiology Key: Exposure to Domestic Waterfowl LPAIV Exposure Adaptation Asian H5N1 HPAIV Re-adaptation HPAIV (H5/H7) HA Mutation LPAIV (H1-16)

  3. California Avian Sub-Populations Commercial Broilers Commercial Turkeys Commercial Layers Custom Slaughter Commercial Game Birds Socialization Feed Stores SPF/Research Proximity Pet Stores Commercial Ducks Shows Auctions Wild Birds Backyard/Hobby Swap Meets Exotic Birds Game Fowl Pet Birds

  4. Laboratories Testing for AI in CA • 1. California Animal Health and Food Safety Lab (CAHFS) – Primary veterinary lab system statewide under CDFA • Private Poultry Industry – Screening tests in-house using AGID, forward positive samples to CAHFS for characterization • San Diego County Agriculture Dept. – Limited testing of all avian species in County Vet lab • UC Davis Researcher – Dr. Carol Cardona who is also testing some wild birds for the UCD Wildlife Health Center project

  5. CAHFS Laboratory Locationshttp://cahfs.ucdavis.edu/

  6. Low Path AI in CA

  7. AI Testing in California (January-June, 2005) Source: D. Rolfe, CAHFS 1 lab accession may represent 1-100 birds Approx 25,000 birds tested

  8. Wild Bird Issues • Very few wild birds being tested • Future plans nationwide for a coordinated wild bird surveillance system (USDA) • Further info on HPAI H5N1 in wild birds and recommendations for handling wild birds at USGS website • http://www.nwhc.usgs.gov/research/WHB/WHB_05_03.html • http://www.nwhc.usgs.gov/research/avian_influenza/HPAI082005.pdf

  9. Poultry Issues • Coordinating notification and response with CDFA • Occupational health concerns for poultry workers • Contact your local CDFA district office • http://www.cdc.gov/flu/avian/professional/protect-guid.htm • http://www.osha.gov/dsg/guidance/avian-flu.html • http://www.osha.gov/dts/shib/shib121304.html

  10. CDFA District Officeshttp://www.cdfa.ca.gov/ahfss/ah/offices.htm

  11. Conclusions • Wild birds are genetic reservoirs of all AI virus genes which are genetically very diverse • LPAIV maintained in wildbirds, and must be adapted to pass to domestic poultry • HPAIV arise in poultry and historically have not gone back to wild birds • Asian H5N1 HPAIV has readapted to some wild bird species creating a new mechanism of spread • Asian poultry production is very different than USA and poses different risks for HPAI introduction and maintenance • Comprehensive surveillance and early detection and response are key to minimizing the impact of HPAI in animals and humans • 7. Planning, communication, and coordination must continue to increase our preparedness for HPAI and possible pandemic

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