Low pathogenic avian influenza (poultry) H7N9, China (People's Rep. of) (OIE, March 24 2014): 2 LBMs & 1 farm affected, Guangdong

[Giuseppe]

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


Low pathogenic avian influenza (poultry) H7N9, China (People's Rep. of)


Information received on 24/03/2014 from Dr Zhang Zhongqui, Director General , China Animal Disease Control Centre, Veterinary Bureau, Ministry of Agriculture, Beijing, China (People's Rep. of)

• Summary
  • Report type Follow-up report No. 15
  • Date of start of the event 04/04/2013
  • Date of pre-confirmation of the event 04/04/2013
  • Report date 21/03/2014
  • Date submitted to OIE 24/03/2014
  • Reason for notification New strain of a listed disease
  • Manifestation of disease Sub-clinical infection
  • Causal agent Low pathogenic avian influenza virus
  • Serotype H7N9
  • Nature of diagnosis Laboratory (basic), Laboratory (advanced)
  • This event pertains to the whole country
  • Related reports
    • Immediate notification (04/04/2013)
    • Follow-up report No. 1 (05/04/2013)
    • Follow-up report No. 2 (10/04/2013)
    • Follow-up report No. 3 (16/04/2013)
    • Follow-up report No. 4 (22/04/2013)
    • Follow-up report No. 5 (24/04/2013)
    • Follow-up report No. 6 (26/04/2013)
    • Follow-up report No. 7 (05/05/2013)
    • Follow-up report No. 8 (09/05/2013)
    • Follow-up report No. 9 (21/05/2013)
    • Follow-up report No. 10 (16/01/2014)
    • Follow-up report No. 11 (26/01/2014)
    • Follow-up report No. 12 (11/02/2014)
    • Follow-up report No. 13 (28/02/2014)
    • Follow-up report No. 14 (07/03/2014)
    • Follow-up report No. 15 (21/03/2014)
• New outbreaks (3)
  • Outbreak 1 - Live bird market, Yuexiu, Guangzhou, GUANGDONG
    • Date of start of the outbreak 08/03/2014
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - 2 ? 1 ? 0 ? 2 ? 0
      • Affected population:
        • 2 samples were collected from the live bird market according to the national surveillance plan and no clinical signs were observed
  • Outbreak 2 - Live bird market, Luogang District, Guangzhou, GUANGDONG
    • Date of start of the outbreak 08/03/2014
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - 370 ? 1 ? 0 ? 370 ? 0
      • Affected population:
        • 25 samples were collected from the live bird market according to the national surveillance plan and no clinical signs were observed.
  • Outbreak 3 - Bajia village, Doumen, Zhuhai , GUANGDONG
    • Date of start of the outbreak 14/03/2014
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - 80004 ? 4 ? 0 ? 80004 ? 0
      • Affected population:
        • 90 samples were collected from the farm according to the national surveillance plan and no clinical signs were observed.
• Summary of outbreaks
  • Total outbreaks: 3
    • Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 80376 ? 6 ? 0 ? 80376 ? 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - 0.01% - 0.00% - 0.00% - 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
• Control measures
  • Measures applied
    • Stamping out
    • Movement control inside the country
    • Screening
    • Zoning
    • Disinfection of infected premises/establishment(s)
    • Dipping / Spraying
    • No vaccination
    • No treatment of affected animals
  • Measures to be applied
    • No other measures
• Diagnostic test results
  • Laboratory name and type ? Species ? Test - Test date ? Result
    • Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE?s Reference Laboratory) - Birds - gene sequencing - 11/03/2014 ? Positive
    • Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE?s Reference Laboratory) ? Birds - gene sequencing - 17/03/2014 ? Positive
    • Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE?s Reference Laboratory) ? Birds - virus isolation - 11/03/2014 ? Positive
    • Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE?s Reference Laboratory) - Birds - virus isolation - 17/03/2014 ? Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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