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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

Avian Influenza Testing In Birds in California

Ben Sun, DVM, MPVM



California Department of Health Services

ecology and epidemiology
Ecology and Epidemiology

Key: Exposure to Domestic Waterfowl




Asian H5N1 HPAIV








california avian sub populations
California Avian Sub-Populations

Commercial Broilers

Commercial Turkeys

Commercial Layers

Custom Slaughter

Commercial Game Birds


Feed Stores



Pet Stores

Commercial Ducks



Wild Birds


Swap Meets

Exotic Birds

Game Fowl

Pet Birds

laboratories testing for ai in ca
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
ai testing in california january june 2005
AI Testing in California (January-June, 2005)

Source: D. Rolfe, CAHFS

1 lab accession may represent 1-100 birds

Approx 25,000 birds tested

wild bird issues
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
poultry issues
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
cdfa district offices http www cdfa ca gov ahfss ah offices htm
CDFA District Officeshttp://www.cdfa.ca.gov/ahfss/ah/offices.htm
  • 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