Giuseppe
Emeritus
[Source: OIE, full page: (LINK). Edited.]
Low pathogenic avian influenza (poultry) H5, United States of America
Information received on 22/04/2014 from Dr John Clifford, Deputy Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
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Low pathogenic avian influenza (poultry) H5, United States of America
Information received on 22/04/2014 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
- Date of start of the event 14/04/2014
- Date of pre-confirmation of the event 18/04/2014
- Report date 22/04/2014
- Date submitted to OIE 22/04/2014
- Reason for notification Reoccurrence of a listed disease
- Date of previous occurrence 06/08/2013
- Manifestation of disease Clinical disease
- Causal agent Low pathogenic avian influenza virus
- Serotype H5
- Nature of diagnosis Laboratory (advanced)
- This event pertains to a defined zone within the country
- New outbreaks (1)
- Outbreak 1 - Stanislaus County, Stanislaus, CALIFORNIA
- Date of start of the outbreak 14/04/2014
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
- Birds - 116000 - ? ? ? ? ? ? ?
- Affected population:
- The affected premises is a commercial Japanese quail (Coturnix japonica) layer flock.
- The quail flock consists of two (2) houses.
- The affected layer house contains approximately 56,000 adult quail.
- The brooder house contains approximately 39,000 quail.
- There are nine (9) additional houses on the premises that house Peking ducks for egg production and contain approximately 21,000 ducks.
- Outbreak 1 - Stanislaus County, Stanislaus, CALIFORNIA
- Summary of outbreaks
- Total outbreaks: 1
- Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
- Birds ? 116000 ? ** ? ? ? ? ? ?
- Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds ? ** ? ** ? ** ? **
- *Removed from the susceptible population through death, destruction and/or slaughter
- **Not calculated because of missing information
- Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
- Total outbreaks: 1
- 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 California Department of Food and Agriculture (CDFA) are conducting a comprehensive epidemiological investigation of this event.
- Epidemiological summary of the event as of 22 April 2014:
- A commercial Japanese quail (Coturnix japonica) layer flock was experiencing increased mortality in the adult laying population.
- Samples were submitted for laboratory testing and were confirmed positive for influenza A virus (IAV) subtype H5.
- The amino acid sequence at the hemagglutinin protein cleavage site of the laboratory specimen is compatible with North American low pathogenic avian influenza virus.
- The sequence is 99.1% similar to A/American green-winged teal/Wisconsin 10OS3127/2010.
- The index premises and two epidemiologically linked premises were placed under quarantine. o Laboratory testing for influenza A virus (IAV) on the two epidemiologically linked premises was negative for IAV.
- Depopulation of adult quail on affected premises began.
- The epidemiological investigation and response to the event are continuing.
- Note by the OIE Animal Health Information Department:
- H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2013).
- Control measures
- Measures applied
- Stamping out
- Quarantine
- Vaccination prohibited
- No treatment of affected animals
- Measures to be applied
- No other measures
- Measures applied
- Diagnostic test results
- Laboratory name and type ? Species ? Test - Test date ? Result
- California Animal Health and Food Safety (CAHFS) Laboratory (Local laboratory) ? Birds - real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) - 18/04/2014 ? Positive
- California Animal Health and Food Safety (CAHFS) Laboratory (Local laboratory) ? Birds - real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) - 19/04/2014 ? Negative
- National Veterinary Services Laboratories (NVSL) (National laboratory) ? Birds - real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) - 19/04/2014 ? Positive
- National Veterinary Services Laboratories (NVSL) (National laboratory) ? Birds - virus isolation - Pending
- Laboratory name and type ? Species ? Test - Test date ? Result
- Future Reporting
- The event is continuing. Weekly follow-up reports will be submitted.
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