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2017-11-20 5:47:09


OIE: Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds), Japan
submited by kickingbird at Nov, 11, 2017 11:27 AM from OIE

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

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

  • SHIMANE ( Matsue-shi )

Total animals affected

Species

Susceptible

Cases

Deaths

Killed and disposed of

Slaughtered

Mute Swan:Anatidae (Cygnus olor)

1

1

0

0

Outbreak statistics

Species

Apparent morbidity rate

Apparent mortality rate

Apparent case fatality rate

Proportion susceptible animals lost*

Mute Swan:Anatidae (Cygnus olor)

**

**

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

Tottori University ( Private Laboratory )

Tests and results

Species

Test

Test date

Result

Mute Swan

gene sequencing

09/11/2017

Positive

Mute Swan

haemagglutination (HA) test

09/11/2017

Positive

Mute Swan

haemagglutination inhibition test (HIT)

09/11/2017

Positive

Mute Swan

intravenous pathogenicity index (IVPI) test

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