OIE: Low pathogenic avian influenza (poultry), United States of America
submited by kickingbird at Sep, 21, 2018 10:16 AM from OIE
| Information received on 19/09/2018 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 |
Follow-up report No. 1 |
| Date of start of the event |
06/09/2018 |
| Date of confirmation of the event |
08/09/2018 |
| Report date |
19/09/2018 |
| Date submitted to OIE |
19/09/2018 |
| Reason for notification |
Recurrence of a listed disease |
| Date of previous occurrence |
30/04/2018 |
| Manifestation of disease |
Sub-clinical infection |
| Causal agent |
Low pathogenic avian influenza virus |
| Serotype |
H7N3 |
| Nature of diagnosis |
Laboratory (advanced) |
| This event pertains to |
a defined zone within the country |
| Related reports |
Immediate notification (12/09/2018)
Follow-up report No. 1 (19/09/2018)
| |
|
|
| Outbreak 1 |
Stanislaus County, Stanislaus, California |
| Date of start of the outbreak |
12/09/2018 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
35000 |
|
|
35000 |
0 | |
| Affected population |
Commercial meat-type turkey flock | |
| Summary of outbreaks |
Total outbreaks: 1 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
35000 |
** |
|
35000 |
0 | |
| 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 | |
|
Epidemiology
| Source of the outbreak(s) or origin of infection |
|
| Epidemiological comments |
As part of the pre-slaughter testing and surveillance program for H5/H7 Avian Influenza, H7N3 low pathogenic avian influenza (LPAI) was detected in a commercial meat-type turkey flock. Surveillance conducted within 10km of the initial farm has detected H7N3 LPAI in another commercial meat-turkey farm. Partial sequence data from the second detection is consistent with the index. State officials have quarantined the affected premises and implemented movement controls. Depopulation and disposal of the birds on the premises is near completion. | |
|
|
Control measures
| Measures applied |
- Stamping out
- Quarantine
- Movement control inside the country
- Zoning
- Surveillance outside containment and/or protection zone
- Surveillance within containment and/or protection zone
- Vaccination permitted (if a vaccine exists)
- No treatment of affected animals
|
| Measures to be applied |
| |
|
Diagnostic test results
| Laboratory name and type |
Species |
Test |
Test date |
Result |
| California Animal Health & Food Safety Laboratory (Local laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
12/09/2018 |
Positive |
| National Veterinary Services Laboratory (National laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
14/09/2018 |
Positive |
| National Veterinary Services Laboratory (National laboratory) |
Birds |
virus sequencing |
11/09/2018 |
Positive | |
|
Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. | |
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