Low pathogenic avian influenza (poultry), Romania (OIE, March 9 2011, edited): November 2010, A/H5N3

[Giuseppe]

Low pathogenic avian influenza (poultry), Romania (OIE, March 9 2011, edited)


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

Low pathogenic avian influenza (poultry), Romania

Information received on 09/03/2011 from Dr Niculae Lazar, General Director , General Sanitary Veterinary Directorate , National Sanitary Veterinary and Food Safety Authority (NSVFSA), Bucharest , Romania

• Summary
  • Report type Immediate notification
  • Start date 03/11/2010
  • Date of first confirmation of the event 10/11/2010
  • Report date 09/03/2011
  • Date submitted to OIE 09/03/2011
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 10/03/2009
  • Manifestation of disease Sub-clinical infection
  • Causal agent Low pathogenic avian influenza virus
  • Serotype H5N3
  • Nature of diagnosis Laboratory (advanced)
  • This event pertains to the whole country

• New outbreaks
  • Outbreak 1 - Cot Candura, TULCEA
    • Date of start of the outbreak 03/11/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Village
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 20 - 20 - ... - ... - ...
      • Affected Population
        • The outbreak occurred in 20 isolated geese which were the property of Babes?Bolyai University and were brought as sentinel birds to Cot Candura location in August 2010 for avian influenza research.
        • This location is isolated, it is surrounded by lakes Fortuna, Balcanestii Mari, Papadia, Rotelciuc and water channel Sontea Noua and Veche.

• Summary of outbreaks
  • Total outbreaks: 1
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 100.00% - ** - ** - **
    • * 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
    • Contact with wild species

• Epidemiological comments
  • Tracheal swabs, cloacal swabs and serological samples were taken on 10 August, 24 September, 29 October and 5 November 2010.
  • On the samples collected on 29 October and 5 November, the RT-PCR test results were positive in tracheal swabs and cloacal swabs; the serological results were negative.
  • On 3 November 2010, Tulcea Sanitary Veterinary and Food Safety Directorate submitted a disease suspicion notification report.
  • According to the procedure, Tulcea Sanitary Veterinary and Food Safety Laboratory submitted to the National Reference Laboratory for avian influenza 20 samples for confirmation/invalidation of the avian influenza suspicion.
  • A positive RT-PCR result for H5 subtype was obtained completed with the result of the virological examination on 12 November 2010: the h?magglutination inhibition and positive neuraminidase inhibition reactions for H5 and N3 subtypes.
  • The date of confirmation is 12 November 2010, as during this period (3 to 12 November 2010) the virus isolation and its characterization as being low pathogenic were carried out.
  • Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2010).

• Control measures
  • Measures applied
    • Screening
    • Zoning
    • 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 Institute of Diagnosis and Animal Health (National laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - haemagglutination inhibition test (HIT) - 12/11/2010 - Positive
      • Birds - neuraminidase inhibition assay - 12/11/2010 - Positive
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 10/11/2010 - Positive
  • Laboratory name and type OIE Reference Laboratory for avian influenza and Newcastle disease (OIE?s Reference Laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - neuraminidase inhibition assay - 30/11/2010 - Positive

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

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