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Netherlands - LP H7N9 Avian Flu in Friesland province

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  • Netherlands - LP H7N9 Avian Flu in Friesland province

    A mild form of bird flu had been detected in a poultry farm with 48,000 chickens in the Frisian Hiaure. It probably is the H7 variant.

    The mild H7 strain of bird flu could mutate to a highly contagious and deadly variant for chickens. The birds in the farm are culled.

    In an area of one kilometer around the holding in the municipality Dongeradeel a transportation ban for poultry, poultry manure, eggs, used litter has been installed. There are no other chicken farms in the area.

    Op een bedrijf met 48.000 kippen is een milde variant van de vogelziekte geconstateerd. Het bedrijf wordt geruimd.
    "Addressing chronic disease is an issue of human rights that must be our call to arms"
    Richard Horton, Editor-in-Chief The Lancet

    ~~~~ Twitter:@GertvanderHoek ~~~ ~~~

  • #2
    Low pathogenic avian influenza (poultry), Netherlands

    Information received on 10/06/2016 from Dr Christianne Bruschke, Chief Veterinary Officer , Ministry of Economic Affairs, Ministry of Economic Affairs, The Hague, Netherlands Summary
    Report type Immediate notification
    Date of start of the event 08/06/2016
    Date of confirmation of the event 09/06/2016
    Report date 10/06/2016
    Date submitted to OIE 10/06/2016
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 03/04/2015
    Manifestation of disease Clinical disease
    Causal agent Low pathogenic avian influenza virus
    Serotype H7N9
    Nature of diagnosis Laboratory (advanced)
    This event pertains to a defined zone within the country
    New outbreaks
    Summary of outbreaks Total outbreaks: 1
    Outbreak Location
    • FRIESLAND (Hiaure)
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 44630 ** 44630
    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;
    Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive
    Epidemiological comments A 1 km restriction zone has been established on 09/06/2016. There are no other premises in the 1 km zone.
    Control measures
    Measures applied
    • Movement control inside the country
    • Screening
    • Stamping out
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
    Measures to be applied
    • No other measures
    Diagnostic test results
    Laboratory name and type Central Veterinary Institute, Lelystad (National laboratory)
    Tests and results
    Species Test Test date Result
    Birds polymerase chain reaction (PCR) 09/06/2016 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.


    Last edited by Pathfinder; June 13, 2016, 09:44 AM. Reason: link


    • #3
      Avian Flu Virus Influenza A virus subtype H7N9 Hiaure not related to Chinese virus

      Published on June 13, 2016

      The Influenza A virus subtype H7N9 virus found in the Netherlands found is not related to the Influenza A virus subtype H7N9 LPAI virus circulating in China that can cause illness and death in humans. This is evident from the first examination of CVI into the origin of the virus confirmed in Hiaure .

      On Thursday, June 9th bird flu (avian influenza, AI) was confirmed by CVI on a farm with free-range chickens in Hiaure (Friesland). The genetic material of one H7 virus was confirmed with the aid of PCR-test. It is a low pathogenic (LPAI) variant of the bird flu virus, which corresponds to the mild clinical symptoms. Then, through research (sequencing) the N-subtype was detected, and it became clear that it is an Influenza A virus subtype H7N9 virus.

      Further analysis of the sequence of a portion of the H- and N-segment shows a relationship with variations of avian influenza viruses that circulate in Europe in wild birds. In the Netherlands found Influenza A virus subtype H7N9 virus is not related to zoonotic virus that may cause morbidity and mortality in people in China circulating LPAI Influenza A virus subtype H7N9. At this time, CVI carries out further research to determine the sequence of the entire genome of the virus. This may provide more insight into the origin and introduction route of the Influenza A virus subtype H7N9 bird flu virus in Friesland.

      In the Netherlands, there are 30 to 50 introductions of mild forms of avian influenza annually. In case of infections with low pathogenic variants of the H5 or H7-type (about three - six per year) additional measures are taken. These viruses can mutate into the highly pathogenic dangerous (highly contagious and deadly for chickens) .

      Veterinary Institute
      Het in Nederland gevonden H7N9 virus is niet gerelateerd aan het in China circulerende LPAI H7N9 virus, dat ziekte en sterfte bij mensen kan veroorzaken. Dit blijkt uit het eerste onderzoek van CVI naar de herkomst van het in Hiaure aangetoonde virus.
      "Addressing chronic disease is an issue of human rights that must be our call to arms"
      Richard Horton, Editor-in-Chief The Lancet

      ~~~~ Twitter:@GertvanderHoek ~~~ ~~~