Highly pathogenic avian influenza, Japan (OIE, March 11 2011), poultry, Mie, Miyazaki, Nara

[Giuseppe]

Highly pathogenic avian influenza, Japan (OIE, March 11 2011)


[Source: OIE, full page, (LINK). Extract, edited.]

Highly pathogenic avian influenza, Japan

Information received on 11/03/2011 from Dr Toshiro Kawashima, CVO, Animal Health Division, Ministry of Agriculture, Forestry and Fisheries, Tokyo , Japan

• Summary
  • Report type Follow-up report No. 10
  • Start date 27/11/2010
  • Date of first confirmation of the event 29/11/2010
  • Report date 11/03/2011
  • Date submitted to OIE 11/03/2011
  • 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 influenza virus
  • Serotype H5N1
  • Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
  • This event pertains to the whole country
  • Related reports
    • Immediate notification (02/12/2010)
    • Follow-up report No. 1 (09/12/2010)
    • Follow-up report No. 2 (16/12/2010)
    • Follow-up report No. 3 (21/12/2010)
    • Follow-up report No. 4 (27/12/2010)
    • Follow-up report No. 5 (23/01/2011)
    • Follow-up report No. 6 (02/02/2011)
    • Follow-up report No. 7 (09/02/2011)
    • Follow-up report No. 8 (17/02/2011)
    • Follow-up report No. 9 (24/02/2011)
    • Follow-up report No. 10 (11/03/2011)

• New outbreaks
  • Outbreak 1 - Minamiise-cho, Watarai-gun, MIE
    • Date of start of the outbreak 26/02/2011
    • Outbreak status Resolved (06/03/2011)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 240000 - 22 - 22 - 239978 - 0
  • Outbreak 2 - Kadokawa-cho, Higashiusuki-gun, MIYAZAKI
    • Date of start of the outbreak 05/03/2011
    • Outbreak status Resolved (07/03/2011)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 33000 - 30 - 30 - 32970 - 0
  • Outbreak 3 - Mutsukura-cho, Gojyo city, NARA
    • Date of start of the outbreak 28/02/2011
    • Outbreak status Resolved (07/03/2011)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 100000 - 67 - 67 - 99933 - 0

• Summary of outbreaks
  • Total outbreaks: 3
  • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
    • Birds - 373000 - 119 - 119 - 372881 - 0
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 0.03% - 0.03% - 100.00% - 100.00%
    • * Removed from the susceptible population through death, destruction and/or slaughter

• Epidemiology
  • Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive

• Epidemiological comments
  • Minamiise-cho, Watarai-gun, Mie:
    • On 26 February 2011, poultry was tested positive for influenza A with rapid test at a farm in Minamiise-cho.
    • Virus was identified as H5 with RT-PCR on 26 February and as H5N1 on 2 March.
    • Mandatory movement restriction has been enforced within 10 km around the affected farm since 26 February 2011.
    • All of the poultry at the farm was destroyed by 3 March.
  • Mutsukura-cho, Gojyo city, Nara:
    • On 28 February 2011, poultry was tested positive for influenza A with rapid test at a farm in Mutsukura-cho.
    • Virus was identified as H5 with RT-PCR on 28 February and as H5N1 on 4 March.
    • Mandatory movement restriction has been enforced within 10 km around the affected farm since 28 February 2011.
    • All of the poultry at the farm was destroyed by 4 March.
  • Kadokawa-cho, Higashiusuki-gun, Miyazaki:
    • On 5 March 2011, poultry was tested positive for influenza A with rapid test at a farm in Kadokawa-cho.
    • Virus was identified as H5 with RT-PCR on 5 March and as H5N1 on 9 March.
    • Mandatory movement restriction has been enforced within 10 km around the affected farm since 5 March 2011.
    • All of the poultry at the farm was destroyed by 6 March.
  • Mandatory movement restrictions were lifted on 25 February in Toyohashi city (follow-up report No. 6), on 26 February in Takaoka-cho (follow-up report No. 7), on 27 February in Izumi city (follow-up report No. 6) and in Miyao (follow-up report No. 7), on 28 February in Takachiho-cho (follow-up report No. 7), on 1 March in Tsuno-cho (follow-up report No. 8) and in Kadokawa-cho (follow-up report No. 8), on 2 March in Takaoka-cho (follow-up report No. 8), on 10 March in Hiyoshi (follow-up report No.9) and on 11 March in Kitaura-machi (follow-up report No.9).

• Control measures
  • Measures applied
    • Stamping out
    • Movement control inside the country
    • Screening
    • Disinfection of infected premises/establishment(s)
    • No vaccination
    • No treatment of affected animals
  • Measures to be applied
    • No other measures

• Diagnostic test results
  • Laboratory name and type Miyazaki Livestock Hygiene Centre (Local laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 05/03/2011 - Positive
  • Laboratory name and type Nara Livestock Hygiene Centre (Local laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 28/02/2011 - Positive
  • Laboratory name and type National Institute of Animal Health (National laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - gene sequencing - 01/03/2011 - Positive
      • Birds - gene sequencing - 03/03/2011 - Positive
      • Birds - gene sequencing - 08/03/2011 Positive
      • Birds - haemagglutination inhibition test (HIT) - 28/02/2011 - Positive
      • Birds - haemagglutination inhibition test (HIT) - 02/03/2011 - Positive
      • Birds - haemagglutination inhibition test (HIT) - 07/03/2011 - Positive
      • Birds - neuraminidase inhibition assay - 02/03/2011 - Positive
      • Birds - neuraminidase inhibition assay - 04/03/2011 - Pending
      • Birds - neuraminidase inhibition assay - 09/03/2011 - Positive
  • Laboratory name and type Mie Livestock Hygiene Centre (Regional Reference Laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 26/02/2011 - Positive

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

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