Highly pathogenic avian influenza, Japan (OIE, Feb 9 2011, edited): Poultry in Miyazaki, Oita

[Giuseppe]

Highly pathogenic avian influenza, Japan (OIE, Feb 9 2011, edited)


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

Highly pathogenic avian influenza, Japan

Information received on 09/02/2011 from Dr Toshiro Kawashima, CVO, Animal Health Division, Ministry of Agriculture, Forestry and Fisheries, Tokyo , Japan

• Summary
  • Report type Follow-up report No. 7
  • Start date 27/11/2010
  • Date of first confirmation of the event 29/11/2010
  • Report date 09/02/2011
  • Date submitted to OIE 09/02/2011
  • 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)

• New outbreaks
  • Outbreak 1 - Takaoka-cho, Miyazaki city, MIYAZAKI
    • Date of start of the outbreak 01/02/2011
    • Outbreak status Resolved (03/02/2011)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 190000 - 193 - 193 - 189807 - 0
  • Outbreak 2 - Takachiho-cho, Nishiusuki-gun, MIYAZAKI
    • Date of start of the outbreak 04/02/2011
    • Outbreak status Resolved (05/02/2011)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 40000 - 60 - 60 - 39940 - 0
  • Outbreak 3 - Miyao, Oita city, OITA
    • Date of start of the outbreak 02/02/2011
    • Outbreak status Resolved (03/02/2011)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 8100 - 58 - 38 - 8062 - 0
  • Outbreak 4 - Takanabe-cho, Koyu-gun, MIYAZAKI
    • Date of start of the outbreak 30/01/2011
    • Outbreak status Resolved (01/02/2011)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 40000 - 73 - 73 - 39927 - 0

• Summary of outbreaks
  • Total outbreaks: 4
  • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
    • Birds - 278100 - 384 - 364 - 277736 - 0
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 0.14% - 0.13% - 94.79% - 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
  • Takanabe-cho, Koyu-gun, Miyazaki:
    • On 30 January 2011, poultry was tested positive for influenza A with rapid test at a farm in Takanabe-cho.
    • Virus was identified as H5 with RT-PCR on 31 January and as H5N1 on 3 February.
    • Mandatory movement restriction has been enforced within 10 km around the affected farm since 30 January 2011.
    • All of the poultry at the farm was destroyed by 31 January.
  • Takaoka-cho, Miyazaki city, Miyazaki:
    • On 1 February 2011, poultry was tested positive for influenza A with rapid test at a farm in Takaoka-cho.
    • Virus was identified as H5 with RT-PCR on 1 February and as H5N1 on 5 February.
    • Mandatory movement restriction has been enforced within 10 km around the affected farm since 1 February 2011.
    • All of the poultry at the farm was destroyed by 2 February.
  • Miyao, Oita city, Oita:
    • On 2 February 2011, poultry was tested positive for influenza A with rapid test at a farm in Miyao.
    • Virus was identified as H5 with RT-PCR on 2 February and as H5N1 on 7 February.
    • Mandatory movement restriction has been enforced within 10 km around the affected farm since 2 February 2011.
    • All of the poultry at the farm was destroyed by 3 February.
  • Takachiho-cho, Nishiusuki-gun, Miyazaki:
    • On 4 February 2011, poultry was tested positive for influenza A with rapid test at a farm in Takachiho-cho.
    • Virus was identified as H5 with RT-PCR on 5 February.
    • Mandatory movement restriction has been enforced within 10 km around the affected farm since 4 February 2011.
    • All of the poultry at the farm was destroyed by 5 February.
  • The outbreaks in Nobeoka city and in Kawaminami-cho reported as H5 in follow-up report No. 6 were confirmed both as H5N1 on 2 February.

• 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) - 31/01/2011 - Positive
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 01/02/2011 - Positive
  • 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) - 05/02/2011 - Positive
  • Laboratory name and type Oita Livestock Hygiene Centre (Local laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 02/02/2011 - Positive
  • Laboratory name and type National Institute of Animal Health (National laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - gene sequencing - 02/02/2011 - Positive
      • Birds - gene sequencing - 04/02/2011 - Positive
      • Birds - gene sequencing - 07/02/2011 - Positive
      • Birds - haemagglutination inhibition test (HIT) - 01/02/2011 - Positive
      • Birds - haemagglutination inhibition test (HIT) - 03/02/2011 - Positive
      • Birds - haemagglutination inhibition test (HIT) - 05/02/2011 - Positive
      • Birds - haemagglutination inhibition test (HIT) - 07/02/2011 - Positive
      • Birds - neuraminidase inhibition assay - 02/02/2011 - Positive
      • Birds - neuraminidase inhibition assay - 03/02/2011 - Positive
      • Birds - neuraminidase inhibition assay - 05/02/2011 - Positive
      • Birds - neuraminidase inhibition assay - 07/02/2011 - Positive

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

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