| Information received on 08/11/2018 from Dr Jack Shere, Deputy Administrator Chief Veterinary Office r, USDA-APHISVeterinary Services, USA United States Department of Agriculture, WASHINGTON, United States of America | |
|
Summary
| Report type |
Follow-up report No. 2 |
| Date of start of the event |
19/10/2018 |
| Date of confirmation of the event |
20/10/2018 |
| Report date |
08/11/2018 |
| Date submitted to OIE |
08/11/2018 |
| Reason for notification |
Recurrence of a listed disease |
| Date of previous occurrence |
2018 |
| Manifestation of disease |
Clinical disease |
| Causal agent |
Low pathogenic avian influenza virus |
| Serotype |
H5N2 |
| Nature of diagnosis |
Laboratory (advanced) |
| This event pertains to |
a defined zone within the country |
| Related reports |
Immediate notification (22/10/2018)
Follow-up report No. 1 (02/11/2018)
Follow-up report No. 2 (08/11/2018)
| |
|
|
| Outbreak 1 (S4) |
Stearns County, Stearns, Minnesota |
| Date of start of the outbreak |
23/10/2018 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
43000 |
|
|
|
| |
| Affected population |
Commercial meat-type turkey flock | |
| Outbreak 2 (S2) |
Stearns County, Stearns, Minnesota |
| Date of start of the outbreak |
31/10/2018 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
24000 |
|
|
|
| |
| Affected population |
Commercial meat-type turkey flock | |
| Outbreak 3 (K2) |
Kandiyohi County, Kandiyohi, Minnesota |
| Date of start of the outbreak |
31/10/2018 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
50000 |
|
|
|
| |
| Affected population |
Commercial meat-type turkey flock | |
| Outbreak 4 (S3) |
Stearns County, Stearns, Minnesota |
| Date of start of the outbreak |
01/11/2018 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
61000 |
|
|
|
| |
| Affected population |
Commercial meat-type turkey flock | |
| Summary of outbreaks |
Total outbreaks: 4 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
178000 |
** |
|
|
| |
| 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 |
November 8, 2018 update: ? The Minnesota Board of Animal Health (BAH) and USDA, Animal and Plant Health Inspection Services (APHIS) are conducting an epidemiological investigation of the events and have increased surveillance as a result of these detections. State officials have quarantined the affected premises and implemented movement controls. Turkeys from all infected premises will be depopulated through controlled marketing. ? Increased surveillance detected H5N2 low pathogenic avian influenza (LPAI) in four additional commercial meat-type turkey flocks within the control areas. North American H5N2 low pathogenicity avian influenza of wild bird lineage was determined from partial HA/NA sequencing and is consistent with the index premises infection. ? Full sequencing of the virus from the index premises showed all gene segments are consistent with North American wild bird lineage H5N2 low pathogenic avian influenza (LPAI) virus. | |
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|
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 |
| Minnesota Poultry Testing Laboratory (Local laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
01/11/2018 |
Positive |
| Minnesota Poultry Testing Laboratory (Local laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
02/11/2018 |
Positive |
| Minnesota Poultry Testing Laboratory (Local laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
03/11/2018 |
Positive |
| National Veterinary Services Laboratories (NVSL) (National laboratory) |
Birds |
nucleotide sequencing |
02/11/2018 |
Positive |
| National Veterinary Services Laboratories (NVSL) (National laboratory) |
Birds |
nucleotide sequencing |
05/11/2018 |
Positive |
| National Veterinary Services Laboratories (NVSL) (National laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
02/11/2018 |
Positive |
| National Veterinary Services Laboratories (NVSL) (National laboratory) |
Birds |
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) |
05/11/2018 |
Positive | |
|
Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. | |
