OIE: Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds), Japan

Information received on 22/01/2018 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 Follow-up report No. 3
Date of start of the event 05/11/2017
Date of confirmation of the event 09/11/2017
Report date 22/01/2018
Date submitted to OIE 22/01/2018
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)
Follow-up report No. 3 (22/01/2018)
New outbreaks (1)
Outbreak 1 Ota ward, TOKYO
Date of start of the outbreak 05/01/2018
Outbreak status Resolved (05/01/2018)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Northern Goshawk:Accipiter gentilis(Accipitridae) 1 1 0 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Northern Goshawk:Accipiter gentilis(Accipitridae) 1 1 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Northern Goshawk:Accipiter gentilis(Accipitridae) ** ** 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 January, one Accipiter gentilis (Northern Goshawk) was found dead in Ota ward. On 10th January, a sample derived from it tested positive for influenza A virus by the National Institute for Environmental Studies. On 17th January, a sample was confirmed as positive for H5N6 subtype of higly pathogenic influenza A virus by the National Institute of Animal Health. Enhanced monitoring of wild birds is ongoing within a ten-kilometer radius of the site.
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 for Environmental Studies (National laboratory) Northern Goshawk reverse transcription - polymerase chain reaction (RT-PCR) 10/01/2018 Positive
National Institute of Animal Health (National laboratory) Northern Goshawk virus isolation 17/01/2018 Positive
National Institute of Animal Health (National laboratory) Northern Goshawk virus sequencing 17/01/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.