OIE: Low pathogenic avian influenza (poultry), United States of America
submited by kickingbird at Mar, 7, 2018 9:10 AM from OIE
| Information received on 06/03/2018 from Dr John Clifford, Official Delegate, Chief Trade Advisor, 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 |
26/02/2018 |
| Date of confirmation of the event |
03/03/2018 |
| Report date |
06/03/2018 |
| Date submitted to OIE |
06/03/2018 |
| Reason for notification |
Recurrence of a listed disease |
| Date of previous occurrence |
2017 |
| Manifestation of disease |
Sub-clinical infection |
| Causal agent |
Low pathogenic avian influenza virus |
| Serotype |
H7N1 |
| Nature of diagnosis |
Laboratory (advanced) |
| This event pertains to |
a defined zone within the country | |
|
|
| Outbreak 1 |
Jasper County, Jasper, MISSOURI |
| Date of start of the outbreak |
26/02/2018 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
20000 |
|
0 |
0 |
0 | |
| Affected population |
Commercial meat turkey flock | |
| Summary of outbreaks |
Total outbreaks: 1 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
20000 |
** |
0 |
0 |
0 | |
| 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 |
|
| Epidemiological comments |
As part of routine, pre-slaughter testing and surveillance for H5/H7 Avian Influenza, H7N1 presumptive low pathogenic avian influenza (LPAI) was detected in a healthy commercial meat turkey flock based upon H7 PCR and antibody to H7 and N1; further characterization is pending virus recovery. There have been no clinical signs of illness or increased mortality on the premises. This is the first detection of H7 LPAI in commercial poultry in the United States for 2018. The turkeys will be depopulated through controlled marketing. The USDA Animal Plant Health Inspection Service (APHIS) and the Missouri Department of Agriculture are conducting a comprehensive epidemiological investigation and have implemented enhanced surveillance and testing related to this finding. Two additional commercial poultry premises located within the 10km zone were tested negative for influenza virus. | |
|
|
Control measures
| Measures applied |
- Movement control inside the country
- Surveillance outside containment and/or protection zone
- Surveillance within containment and/or protection zone
- Quarantine
- Zoning
- Vaccination prohibited
- No treatment of affected animals
|
| Measures to be applied |
| |
|
Diagnostic test results
| Laboratory name and type |
Species |
Test |
Test date |
Result |
| Missouri Department of Agriculture Veterinary Diagnostic Laboratory (Local laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
02/03/2018 |
Positive |
| National Veterinary Services Laboratories (National laboratory) |
Birds |
haemagglutination inhibition test (HIT) |
05/03/2018 |
Positive |
| National Veterinary Services Laboratories (National laboratory) |
Birds |
neuraminidase inhibition assay |
05/03/2018 |
Positive |
| National Veterinary Services Laboratories (National laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
03/03/2018 |
Positive |
| National Veterinary Services Laboratories (National laboratory) |
Birds |
virus isolation |
|
Pending | |
|
Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. | |
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