Low pathogenic avian influenza (poultry) H7N9, China (People's Rep. of) (OIE, January 27 2014): 3 more environmental samples from markets

[Giuseppe]

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


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


Information received on 26/01/2014 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. 11
  • Date of start of the event 04/04/2013
  • Date of pre-confirmation of the event 04/04/2013
  • Report date 26/01/2014
  • Date submitted to OIE 26/01/2014
  • 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)
• New outbreaks (2)
  • Outbreak 1 - Agriculture products market, Guangzhou, GUANGDONG
    • Date of start of the outbreak 11/01/2014
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - 1200 ? 2 ? 0 ? 1200 ? 0
      • Affected population:
        • All 185 specimens (chicken) were collected according to the national surveillance plan and no clinical signs were found.
        • Two specimens tested positive from Changban agriculture product market and Yijinxinjie agriculture market, respectively.
  • Outbreak 2 - Meiling Agriculture products market, Jinjiang, Quanzhou, FUJIAN
    • Date of start of the outbreak 16/01/2014
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - ? ? 1 - ? ? ? ? ?
      • Affected population:
        • All 220 specimens (89 chickens, 53 pigeons, 22 ducks and 56 environment specimens) were collected according to the national surveillance plan and no clinical signs were found.
        • One environment specimen tested positive from Meiling agriculture product market.
• Summary of outbreaks
  • Total outbreaks: 2
    • Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 1200 ? 3 ? 0 ? 1200 ? 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds ? ** ? ** ? ** ? **
      • *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
• Control measures
  • Measures applied
    • Stamping out
    • Movement control inside the country
    • 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 - reverse transcription - polymerase chain reaction (RT-PCR) - 13/01/2014 ? Positive
    • Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE?s Reference Laboratory) ? Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 19/01/2014 ? Positive
    • Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE?s Reference Laboratory) - Birds - virus isolation - 13/01/2014 ? Positive
    • Harbin veterinary research institute, Chinese academy of agricultural sciences (OIE?s Reference Laboratory) ? Birds - virus isolation - 19/01/2014 ? Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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