Highly pathogenic avian influenza, Japan (WAHID Interface - OIE World Animal Health Information Database, Dec. 22 2010, edited)

[Giuseppe]

Highly pathogenic avian influenza, Japan (WAHID Interface - OIE World Animal Health Information Database, Dec. 22 2010, edited)


[Source: OIE, full text: <cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10083 ">WAHID Interface - OIE World Animal Health Information Database</cite>. Edited.]

Highly pathogenic avian influenza, Japan

Information received on 22/12/2010 from Dr Toshiro Kawashima, CVO, Animal Health Division, Ministry of Agriculture, Forestry and Fisheries, Tokyo , Japan

• Summary
  • Report type Follow-up report No. 1
  • Start date 16/12/2010
  • Date of first confirmation of the event 19/12/2010
  • Report date 22/12/2010
  • Date submitted to OIE 22/12/2010
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 01/04/2009
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian inluenza virus
  • Serotype H5
  • Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
  • This event pertains to the whole country
  • Related reports
    • Immediate notification (20/12/2010)
    • Follow-up report No. 1 (22/12/2010)

• New outbreaks
  • Outbreak 1 - A wildlife sanctuary in Kagoshima, KAGOSHIMA
    • Date of start of the outbreak 18/12/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Wild species - ... - 1 - 1 - 0 - 0
      • Affected Population: Hooded crane
  • Summary of outbreaks
    • Total outbreaks: 1
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Wild species - ** - ** - 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
  • It is confirmed on 22 December 2010 that a wild hooded crane (Grus monacha) in Kagoshima prefecture was infected with HPAI.
  • On 18 December 2010, the stuff of Izumi city gave protection to an injured crane, which was dead thereafter.
  • On 20 December 2010, Kagoshima University confirmed a sample taken from the dead bird was influenza A positive by antigen-capture kits.
  • On 21 December 2010, Tottori University confirmed by PCR test that the case was due to influenza A virus subtype H5N1.
  • On 22 December 2010, Tottori University affirmed the case as highly pathogenic avian influenza because the isolate is a closely-related strain with the virus isolated from faeces of migratory wild ducks in Hokkaido in October 2010 and the cases occurred in Shimane prefecture in November 2010.
  • Kagoshima prefecture and neighboring Kumamoto prefecture visited all poultry farms located within 10 km around the place where the case was found out and confirmed there was no clinically abnormal poultry in the farms (approximately 5.2 million poultry of 162 farms).
  • Although, as of 22 December 2010, a total of 7 dead wild hooded cranes are detected, the causes of death of the other 6 cranes are inconclusive.

• Control measures
  • Measures applied
    • Screening
    • Disinfection of infected premises/establishment(s)
    • 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
      • Wild species - gene sequencing - 22/12/2010 - Positive
      • Wild species - polymerase chain reaction (PCR) - 21/12/2010 - Positive

• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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