Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Japan
Information received on 10/11/2017 from Dr Kazuo Ito, Director, International Animal Health Affairs Office, Animal Health Division, Food Safety and Consumer Affairs Bureau, Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan
Summary
Report type Immediate notification
Date of start of the event 05/11/2017
Date of confirmation of the event 09/11/2017
Report date 10/11/2017
Date submitted to OIE 10/11/2017
Reason for notification Recurrence of a listed disease
Date of previous occurrence 08/03/2017
Manifestation of disease Clinical disease
Causal agent Highly pathogenic influenza A virus
Serotype H5N6
Nature of diagnosis Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (10/11/2017)
Follow-up report No. 1 (13/11/2017)
Follow-up report No. 2 (24/11/2017)
New outbreaks (1)
Outbreak 1 Matsue-shi, SHIMANE
Date of start of the outbreak 05/11/2017
Outbreak status Resolved (05/11/2017)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Mute Swan:Cygnus olor(Anatidae) 1 1 0 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Mute Swan:Cygnus olor(Anatidae) 1 1 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Mute Swan:Cygnus olor(Anatidae) ** ** 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 On 5th November 2017, one Cygnus olor (mute swan) was found dead in Matsue-shi and the sample derived from it was tested positive for influenza A virus by antigen-capture kit. On 9th November 2017, the sample was confirmed positive for H5N6 subtype influenza A virus. Enhanced monitoring of wild birds is ongoing within a ten-kilometer radius of the site. Interviews and on-sight inspection were carried out on poultry farms in the ten kilometer area and no abnormality was found.
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
Tottori University (Private Laboratory) Mute Swan gene sequencing 09/11/2017 Positive
Tottori University (Private Laboratory) Mute Swan haemagglutination (HA) test 09/11/2017 Positive
Tottori University (Private Laboratory) Mute Swan haemagglutination inhibition test (HIT) 09/11/2017 Positive
Tottori University (Private Laboratory) Mute Swan intravenous pathogenicity index (IVPI) test 09/11/2017 Positive
Tottori University (Private Laboratory) Mute Swan neuraminidase inhibition assay 09/11/2017 Positive
Tottori University (Private Laboratory) Mute Swan reverse transcription - polymerase chain reaction (RT-PCR) 09/11/2017 Positive
Tottori University (Private Laboratory) Mute Swan virus isolation 09/11/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations