2009 pandemic A/H1N1 influenza virus, United States of America (WAHID Interface - OIE World Animal Health Information Database, 12/1/09, edited)
2009 pandemic A/H1N1 influenza virus, United States of America
Information received on 30/11/2009 from Dr John Clifford, Deputy Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
-
<cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=8709" >WAHID Interface - OIE World Animal Health Information Database</cite>
Information received on 30/11/2009 from Dr John Clifford, Deputy Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
- Summary
- Report type Immediate notification
- Start date 16/11/2009
- Date of first confirmation of the event 24/11/2009
- Report date 30/11/2009
- Date submitted to OIE 30/11/2009
- Reason for notification Emerging disease
- Morbidity 1 scale05
- Mortality 0 scale05
- Zoonotic impact Refer to OIE guidance/opinion
- Causal agent 2009 pandemic A/H1N1 influenza virus
- New outbreaks
- Outbreak 1 - State of Virginia, VIRGINIA
- Date of start of the outbreak 16/11/2009
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 3270 - 0 - 0 - 0
- Affected Population - Commercial turkey breeder flock.
- The barn housing the affected birds contains approximately 3,270 turkey breeder hens.
- No other barns on the farm are reported to be affected and no other birds have shown signs of clinical illness.
- Outbreak 1 - State of Virginia, VIRGINIA
- Summary of outbreaks
- Total outbreaks: 1
- Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - ** - 0.00% - ** - 0.00%
- * Removed from the susceptible population through death, destruction and/or slaughter
- ** Not calculated because of missing information
- Epidemiology
- Source of the outbreak(s) or origin of infection
- Unknown or inconclusive
- Source of the outbreak(s) or origin of infection
- Epidemiological comments
- The USDA Animal Plant Health Inspection Service (APHIS) and the Virginia Department of Agriculture and Consumer Services are conducting a comprehensive epidemiological investigation of this event.
- Epidemiological sequence of event as of 30 November 2009:
- Week of 16 November 2009: A significant drop in egg production was observed in one barn only.
- 23 November 2009: Presumptive detection of 2009 pandemic A/H1N1 was reported to APHIS and laboratory samples were submitted to the National Veterinary Services Laboratories (NVSL).
- 30 November 2009: NVSL confirmation of 2009 pandemic A/H1N1 influenza virus.
- Information points to recent exposure of the turkeys to a farm worker exhibiting influenza-like symptoms.
- The farm was/and continues to be under enhanced biosecurity.
- Control measures
- Measures applied
- No vaccination
- No treatment of affected animals
- Measures to be applied
- No other measures
- Measures applied
- Diagnostic test results
- Laboratory name and type National Veterinary Services Laboratory (NVSL) (National laboratory)
- Tests and results: Species - Test - Test date - Result
- Birds - agar-gel immunodiffusion (AGID) - 24/11/2009 - Positive
- Birds - gene sequencing - 30/11/2009 - Positive
- Birds - real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) - 24/11/2009 - Positive
- Birds - virus isolation - 30/11/2009 - Positive
- Tests and results: Species - Test - Test date - Result
- Laboratory name and type National Veterinary Services Laboratory (NVSL) (National laboratory)
- Future Reporting
- The event is continuing. Weekly follow-up reports will be submitted.
-