Highly pathogenic avian influenza H7N7, Italy (OIE, August 26 2013): 1 New Poultry Outbreak

[Giuseppe]

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


Highly pathogenic avian influenza H7N7, Italy


Information received on 23/08/2013 from Prof. Dr Romano Marabelli, Chief Veterinary Officer, Department for Veterinary Public Health, Food Safety and Collegial Bodies for Health Protection, Ministry of Health, Rome, Italy

• Summary
  • Report type Follow-up report No. 2
  • Date of start of the event 10/08/2013
  • Date of pre-confirmation of the event 14/08/2013
  • Report date 23/08/2013
  • Date submitted to OIE 23/08/2013
  • Reason for notification New strain of a listed disease
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian influenza virus
  • Serotype H7N7
  • Nature of diagnosis Clinical, Laboratory (basic)
  • This event pertains to a defined zone within the country
  • Related reports
    • Immediate notification (15/08/2013)
    • Follow-up report No. 1 (21/08/2013)
    • Follow-up report No. 2 (23/08/2013)
• New outbreaks (1)
  • Outbreak 1 - Portomaggiore, FERRARA, EMILIA-ROMAGNA
    • Date of start of the outbreak 21/08/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - 19850 ? 19850 ? 1300 ? 0 ? 0
      • Affected population:
        • On the basis of the monitoring activities implemented after the detection of the primary outbreak in Ostellato, Ferrara province, notified on last 15 August, a secondary outbreak in the surveillance zone, located at 3,5 km from the primary outbreak, has been confirmed in Portomaggiore, Ferrara province, affecting a commercial turkey farm.
• Summary of outbreaks
  • Total outbreaks: 1
    • Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed - Slaughtered
      • Birds ? 19850 ? 19850 ? 1300 ? 0 ? 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - 100.00% - 6.55% - 6.55% - 6.55%
      • *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
  • The birds have been sampled and tested the first time on 19 August 2013 with negative results.
  • The National Reference Laboratory in Padova has confirmed H7 at RT-PCR.
  • Further diagnostic examination, also to determine the N type and HPAI/LPAI, and the epidemiological investigation are on-going.
  • Restriction zones have been established around the farm and depopulation will be carried out.
• Control measures
  • Measures applied
    • Quarantine
    • Movement control inside the country
    • Vaccination prohibited
    • No treatment of affected animals
  • Measures to be applied
    • Stamping out
    • Screening
    • Disinfection of infected premises/establishment(s)
• Diagnostic test results
  • Laboratory name and type ? Species ? Test - Test date ? Result
    • Experimental Zooprophylactic Institute (IZSVe), PADOVA (National laboratory) ? Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 23/08/2013 ? Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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