Highly pathogenic avian influenza H7N7, Italy (OIE, September 5 2013): 2 New Poultry Outbreaks

[Giuseppe]

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


Highly pathogenic avian influenza H7N7, Italy


Information received on 05/09/2013 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. 4
  • Date of start of the event 10/08/2013
  • Date of pre-confirmation of the event 14/08/2013
  • Report date 05/09/2013
  • Date submitted to OIE 05/09/2013
  • 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)
    • Follow-up report No. 3 (28/08/2013)
    • Follow-up report No. 4 (05/09/2013)
• New outbreaks (2)
  • Outbreak 1 - Mordano, BOLOGNA, EMILIA-ROMAGNA
    • Date of start of the outbreak 03/09/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - 98200 ? 11 ? 11 ? 0 ? 0
      • Affected population:
        • The positivity regards a commercial layer hens farm located in the protection zone established around the 2nd outbreak in Mordano Municipality.
  • Outbreak 2 - Bondeno, FERRARA, EMILIA-ROMAGNA
    • Date of start of the outbreak 04/09/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds - 3 ? 1 ? 1 ? 2 ? 0
      • Affected population:
        • The positivity regards a backyard flock of free-range hens.
        • During last week of August, five hens died and one of them on 1 September was delivered to the Laboratory and resulted positive to avian influenza type A/H7 at PCR.
• Summary of outbreaks
  • Total outbreaks: 2
    • Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 98203 ? 12 ? 12 ? 2 ? 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - 0.01% - 0.01% - 100.00% - 0.01%
      • *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 National Reference Laboratory in Padova has confirmed H7 at RT-PCR.
  • The farm in Mordano is already located in the restriction zones and depopulation will be carried out.
  • Restriction zones have been established around the flock in Bondeno, a protection zone of 3 km and a surveillance zone of 10 km, the hens have been culled and the epidemiological investigation is on going.
• 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) - 04/09/2013 ? Positive
    • Experimental Zooprophylactic Institute (IZSVe), PADOVA (National laboratory) ? Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 05/09/2013 ? Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

-
-------