GENERAL INFORMATION
COUNTRY/TERRITORY OR ZONE
ZONE
ANIMAL TYPE
TERRESTRIAL
DISEASE CATEGORY
Listed disease
EVENT ID
5360
DISEASE
High pathogenicity avian influenza viruses (poultry) (Inf. with)
CAUSAL AGENT
Highly pathogenic avian influenza virus
GENOTYPE / SEROTYPE / SUBTYPE
H5N1
START DATE
2023/11/24
REASON FOR NOTIFICATION
Recurrence of an eradicated disease
DATE OF LAST OCCURRENCE
2023/04/06
CONFIRMATION DATE
2023/11/28
EVENT STATUS
On-going
END DATE - SELF-DECLARATION
NO REPORT INFORMATION
REPORT NUMBER
Follow-up report 3
REPORT ID
FUR_164972
REPORT REFERENCE
Outbreak 5-6
REPORT DATE
2024/01/10
REPORT STATUS
Validated
NO EVOLUTION REPORT
EPIDEMIOLOGY
SOURCE OF EVENT OR ORIGIN OF INFECTION
- Unknown or inconclusive
Follow-up report 3 (Outbreaks 5 and 6) Outbreak 5 : Takayama-Village1 On 31st December 2023, a Livestock Hygiene Service Centre (LHSC) in Gunma Prefecture received a notification from a domestic laying hen farm, outlining an increase in the number of dead birds. The samples were collected from birds in the farm by prefectural veterinary officers and tested positive for influenza A virus by viral antigen rapid test. On 1st January 2024, the LHSC conducted RT-PCR and rRT-PCR tests and confirmed that the subtype was H5. On 6 January 2024, stamping-out was completed. On 9 January 2024, relevant control measures (including disinfection) were completed. On 10 January 2024, the National Institute of Animal Health (NIAH) conducted the sequencing and confirmed that the subtype of the virus was H5N1 and the causative virus was determined as high pathogenicity avian influenza. Movement restriction and shipment restriction are imposed on farms within a radius of 3 km and 10 km of the affected farms respectively. Outbreak 6 : Yamagata-City1 On 4 January 2024, a Livestock Hygiene Service Centre (LHSC) in Gifu Prefecture received a notification from a domestic broiler farm on an increase in the number of dead birds. The samples were collected from birds in the farm by prefectural veterinary officers and tested positive for influenza A virus by viral antigen rapid test. On 5 January 2024, the LHSC conducted RT-PCR and RRT-PCR tests and confirmed that the subtype was H5. On 6 January 2024, stamping-out was completed. On 7 January 2024, relevant control measures (including disinfection) were completed. On 10 January 2024, the National Institute of Animal Health (NIAH) conducted the sequencing and confirmed that the subtype of the virus was H5N1 and the causative virus was determined as high pathogenicity avian influenza. Movement restriction and shipment restriction are imposed on farms within a radius of 3 km and 10 km of the affected farms respectively.
QUANTITATIVE DATA SUMMARY
MEASURING UNIT
Animal
SpeciesSusceptibleCasesDeathsKilled and Disposed ofSlaughtered/ Killed for commercial useVaccinated Birds (DOMESTIC)NEW371492244244371248--TOTAL55011868468254943600
DIAGNOSTIC DETAILS
CLINICAL SIGNS
YES
METHOD OF DIAGNOSTIC
Diagnostic test
| Gene sequencing | National Institute of Animal Health, National Agriculture and Food Research Organization | Birds | 6 | 2023/11/28 | 2024/01/10 | Positive |
| Reverse transcription-polymerase chain reaction (RT-PCR) | Livestock Hygiene Service Centre | Birds | 6 | 2023/11/25 | 2024/01/05 | Positive |
| Real-time reverse transcription polymerase chain reaction (rRT-PCR) | Livestock Hygiene Service Centre | Birds | 6 | 2023/11/25 | 2024/01/05 | Positive |
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