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Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Japan
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Information received on 24/12/2020 from Dr Norio Kumagai, Director, Chief Veterinary Officer, Animal Health Division, Food Safety and Consumer Affairs Bureau,
Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan
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Summary
| Report type |
Immediate notification |
| Date of start of the event |
03/12/2020 |
| Date of confirmation of the event |
09/12/2020 |
| Report date |
23/12/2020 |
| Date submitted to OIE |
24/12/2020 |
| Reason for notification |
Recurrence of a listed disease |
| Date of previous occurrence |
25/03/2018 |
| Manifestation of disease |
Clinical disease |
| Causal agent |
Highly pathogenic influenza A virus |
| Serotype |
H5N8 |
| Nature of diagnosis |
Laboratory (basic), Laboratory (advanced) |
| This event pertains to |
a defined zone within the country |
| Related reports |
Immediate notification (23/12/2020)
Follow-up report No. 1 (28/12/2020)
Follow-up report No. 2 (04/01/2021)
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| Outbreak 1 |
Wakayama-City 1, Wakayama |
| Date of start of the outbreak |
03/12/2020 |
| Outbreak status |
Resolved (03/12/2020) |
| Epidemiological unit |
Not applicable |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Mandarin Duck:Aix galericulata(Anatidae) |
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1 |
1 |
0 |
0 |
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| Affected population |
A dead Aix Galericulata was found and tested. |
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| Outbreak 2 |
Yakage-Town 1, Okayama |
| Date of start of the outbreak |
04/12/2020 |
| Outbreak status |
Resolved (04/12/2020) |
| Epidemiological unit |
Not applicable |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Peregrin falcon:Falco peregrinus(Falconidae) |
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1 |
1 |
0 |
0 |
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| Affected population |
A dead Falco peregrinus was found and tested. |
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| Outbreak 3 |
Mitoyo-City 1, Kagawa |
| Date of start of the outbreak |
08/12/2020 |
| Outbreak status |
Resolved (08/12/2020) |
| Epidemiological unit |
Not applicable |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Eastern buzzard:Buteo japonicus(Accipitridae) |
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1 |
1 |
0 |
0 |
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| Affected population |
A dead Buteo japonicus was found and tested. |
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| Outbreak 4 |
Izumi-City 1, Kagoshima |
| Date of start of the outbreak |
18/12/2020 |
| Outbreak status |
Resolved (18/12/2020) |
| Epidemiological unit |
Not applicable |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Hooded crane:Grus monacha(Gruidae) |
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1 |
1 |
0 |
0 |
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| Affected population |
A dead Grus monacha was found and tested. |
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| Summary of outbreaks |
Total outbreaks: 4 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Mandarin Duck:Aix galericulata(Anatidae) |
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1 |
1 |
0 |
0 |
| Peregrin falcon:Falco peregrinus(Falconidae) |
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1 |
1 |
0 |
0 |
| Eastern buzzard:Buteo japonicus(Accipitridae) |
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1 |
1 |
0 |
0 |
| Hooded crane:Grus monacha(Gruidae) |
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1 |
1 |
0 |
0 |
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| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Mandarin Duck:Aix galericulata(Anatidae) |
** |
** |
100.00% |
** |
| Peregrin falcon:Falco peregrinus(Falconidae) |
** |
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100.00% |
** |
| Eastern buzzard:Buteo japonicus(Accipitridae) |
** |
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100.00% |
** |
| Hooded crane:Grus monacha(Gruidae) |
** |
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100.00% |
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| *Removed from the susceptible population through death, destruction and/or slaughter |
| **Not calculated because of missing information |
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Epidemiology
| Source of the outbreak(s) or origin of infection |
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Contact with wild species
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| Epidemiological comments |
Cases in wild birds :
Wakayama-City 1;
A dead Aix galericulata(Mandarin Duck) was collected on 3 December 2020 and tested against avian influenza virus. The Tottori University conducted RT-PCR and gene sequencing tests and confirmed that the subtype of the virus was H5N8.
Yakage-Town 1;
A dead Falco peregrinus (Peregrine Falcon) was collected on 4 December 2020 and tested against avian influenza virus. The Tottori University conducted RT-PCR and gene sequencing tests and confirmed that the subtype of the virus was H5N8.
Mitoyo-City 1;
A dead Buteo japonicus (Eastern buzzard) was collected on 8 December 2020 and tested against avian influenza virus. The Tottori University conducted RT-PCR and gene sequencing tests and confirmed that the subtype of the virus was H5N8.
Izumi-City 1 ;
A dead Grus monacha (Hooded crane) was collected on 18 December 2020 and tested against avian influenza virus. The Kagoshima University conducted RT-PCR and gene sequencing tests and confirmed that the subtype of the virus was H5N8.
Enhanced monitoring of wild birds is ongoing within a 10 kilometer radius around the sites. |
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Control measures
| Measures applied |
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Surveillance within containment and/or protection zone
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Vaccination prohibited
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No treatment of affected animals
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| Measures to be applied |
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Diagnostic test results
| Laboratory name and type |
Species |
Test |
Test date |
Result |
| Kagoshima University (Private Laboratory) |
Hooded crane |
gene sequencing |
22/12/2020 |
Positive |
| Kagoshima University (Private Laboratory) |
Hooded crane |
reverse transcription - polymerase chain reaction (RT-PCR) |
22/12/2020 |
Positive |
| Tottori University (Private Laboratory) |
Eastern buzzard |
gene sequencing |
16/12/2020 |
Positive |
| Tottori University (Private Laboratory) |
Eastern buzzard |
reverse transcription - polymerase chain reaction (RT-PCR) |
16/12/2020 |
Positive |
| Tottori University (Private Laboratory) |
Mandarin Duck |
gene sequencing |
09/12/2020 |
Positive |
| Tottori University (Private Laboratory) |
Mandarin Duck |
reverse transcription - polymerase chain reaction (RT-PCR) |
09/12/2020 |
Positive |
| Tottori University (Private Laboratory) |
Peregrin falcon |
gene sequencing |
09/12/2020 |
Positive |
| Tottori University (Private Laboratory) |
Peregrin falcon |
reverse transcription - polymerase chain reaction (RT-PCR) |
09/12/2020 |
Positive |
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Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. |
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Map of outbreak locations
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