Information received on 04/01/2021 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
Summary
Report type
Follow-up report No. 2
Date of start of the event
03/12/2020
Date of confirmation of the event
09/12/2020
Report date
04/01/2021
Date submitted to OIE
04/01/2021
Reason for notification
First occurrence of a listed disease
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)
New outbreaks (1)

Outbreak 1
Tokigawa-Town 1, Saitama
Date of start of the outbreak
23/12/2020
Outbreak status
Resolved (23/12/2020)
Epidemiological unit
Not applicable
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Ural Owl:Strix uralensis(Strigidae)

1
1
0
0
Affected population
Strix uralensis(Ural Owl)
Summary of outbreaks
Total outbreaks: 1
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Ural Owl:Strix uralensis(Strigidae)

1
1
0
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Ural Owl:Strix uralensis(Strigidae)
**
**
100.00%
**
*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
Unknown or inconclusive
Epidemiological comments
Follow-up report No. 2 New outbreaks in wild birds are as follows: Outbreak 1 - Tokigawa-Town 1 – A dead Strix uralensis (Ural owl) was collected on 23 December 2020 and tested against avian influenza virus. On 30 December, National Institute of Animal Health conducted RT-PCR and gene sequencing tests and confirmed that the subtype of the virus was H5N8.

Control measures
Measures applied
Screening
Disinfection
Vaccination prohibited
No treatment of affected animals
Measures to be applied
No other measures
Diagnostic test results
Laboratory name and type
Species
Test
Test date
Result
National Institute of Animal Health (National laboratory)
Ural Owl
gene sequencing
30/12/2020
Positive
National Institute of Animal Health (National laboratory)
Ural Owl
reverse transcription - polymerase chain reaction (RT-PCR)
30/12/2020
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.