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Iceland - 1 new outbreak of Infectious bursal disease (Gumboro disease) in birds in farm, H?lavellir, Rang?rvalla (OIE, September 19, 2019)

Pathfinder

Pathfinder

Editor, Senior Moderator
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[TD="width: *, align: left"] Infectious bursal disease (Gumboro disease),
Iceland
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[TD="width: 1%, align: right"] [/TD]
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[TD="class: topbigtabletitle27"]Information received on 20/09/2019 from Dr Sigurborg Da?ad?ttir, Chief Veterinary Officer, Icelandic Food and Veterinary Authority, Ministry of Industries and Innovation, Selfoss, Iceland[/TD]
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[TD] Summary
[TABLE="class: TableFoyers, width: 917"]
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[TD="class: filtrer_th, width: 10%"]Report type[/TD]
[TD="width: 30%"]Immediate notification[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]19/07/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]09/09/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Report date[/TD]
[TD="width: 30%"]19/09/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]20/09/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]Recurrence of a listed disease[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of previous occurrence[/TD]
[TD="width: 30%"]01/01/1998[/TD]
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[TD="class: filtrer_th, width: 10%"]Manifestation of disease[/TD]
[TD="width: 30%"]Clinical disease[/TD]
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[TD="class: filtrer_th, width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Infectious bursal disease virus[/TD]
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[TD="class: filtrer_th, width: 10%"]Serotype[/TD]
[TD="width: 30%"]Pending[/TD]
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[TD="class: filtrer_th, width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Clinical, Laboratory (basic), Laboratory (advanced), Necropsy[/TD]
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[TD="class: filtrer_th, width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]the whole country[/TD]
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[TD] New outbreaks (1)
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[TD="class: filtrer_th ta_left, align: left"]Outbreak 1[/TD]
[TD="class: filtrer_th ta_left"]H?lavellir, Rang?rvalla[/TD]
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[TD="class: filtrer_th ta_left"]Date of start of the outbreak[/TD]
[TD]19/07/2019[/TD]
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[TD="class: filtrer_th ta_left"]Outbreak status[/TD]
[TD]Resolved (19/09/2019)[/TD]
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[TD="class: filtrer_th ta_left"]Epidemiological unit[/TD]
[TD]Farm[/TD]
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[TD="class: filtrer_th ta_left"]Affected animals[/TD]
[TD] [TABLE="class: TableFoyers, width: 640"]
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[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Susceptible[/TD]
[TD="class: filtrer_th ta_center last"]Cases[/TD]
[TD="class: filtrer_th ta_center last"]Deaths[/TD]
[TD="class: filtrer_th ta_center last"]Killed and disposed of[/TD]
[TD="class: filtrer_th ta_center last"]Slaughtered[/TD]
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[TD]Birds[/TD]
[TD="class: ta_right"]47850[/TD]
[TD="class: ta_right"]11830[/TD]
[TD="class: ta_right"]10292[/TD]
[TD="class: ta_right"]1538[/TD]
[TD="class: ta_right"]36020[/TD]
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[TD] [TABLE="class: TableFoyers, width: 917"]
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[TD="class: filtrer_th ta_left, align: left"]Summary of outbreaks[/TD]
[TD="class: filtrer_th ta_left"]Total outbreaks: 1[/TD]
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[TD="class: filtrer_th ta_left"]Total animals affected[/TD]
[TD] [TABLE="class: TableFoyers, width: 745"]
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[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Susceptible[/TD]
[TD="class: filtrer_th ta_center last"]Cases[/TD]
[TD="class: filtrer_th ta_center last"]Deaths[/TD]
[TD="class: filtrer_th ta_center last"]Killed and disposed of[/TD]
[TD="class: filtrer_th ta_center last"]Slaughtered[/TD]
[/TR]
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[TD]Birds[/TD]
[TD="class: ta_right"]47850[/TD]
[TD="class: ta_right"]11830[/TD]
[TD="class: ta_right"]10292[/TD]
[TD="class: ta_right"]1538[/TD]
[TD="class: ta_right"]36020[/TD]
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[TD="class: filtrer_th ta_left"]Outbreak statistics[/TD]
[TD] [TABLE="class: TableFoyers, width: 745"]
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[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Apparent morbidity rate[/TD]
[TD="class: filtrer_th ta_center last"]Apparent mortality rate[/TD]
[TD="class: filtrer_th ta_center last"]Apparent case fatality rate[/TD]
[TD="class: filtrer_th ta_center last"]Proportion susceptible animals lost*[/TD]
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[TD]Birds[/TD]
[TD="class: ta_right"]24.72%[/TD]
[TD="class: ta_right"]21.51%[/TD]
[TD="class: ta_right"]87.00%[/TD]
[TD="class: ta_right"]100.00%[/TD]
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[TD="class: filtrer_th ta_left, colspan: 2"]*Removed from the susceptible population through death, destruction and/or slaughter[/TD]
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[TD] Epidemiology
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[TD="class: filtrer_th ta_left"]Source of the outbreak(s) or origin of infection[/TD]
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  • Unknown or inconclusive
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[TD="class: filtrer_th ta_left"]Epidemiological comments[/TD]
[TD]In late July, the Icelandic Food and Veterinary Authority (MAST) was notified about an increase in daily mortality (0.5%) in 23 days old broilers in the oldest flock on a broiler farm with four units. Subsequently, the other flocks on the same farm also got affected. The birds were diagnosed with both Viral inclusion body hepatitis (IBH) and Infectious bursal disease (IBD). Post mortem examination revealed hepatitis with eosinophilic intranuclear inclusion bodies and an extensive lymphoid depletion in lymphoid organs, especially in the bursa of Fabricius. Attempts to verify adenovirus as the cause of hepatitis have been unsuccessful. Serology for IBD was positive and the presence of IBDV was confirmed with PCR. Genotyping is pending. Infectious bursal disease (IBD, Gumboro disease) has not been detected in Iceland since 1998 and vaccination against the disease is not practiced. Birds with clinical symptoms either died or were humanely killed. All carcasses were securely disposed of. The remaining birds were slaughtered under the strict supervision of veterinary officers. Intensive cleaning and disinfection of the premises have been carried out. Certain measures are planned to be applied as an attempt to eradicate the virus from the affected premises such as prolonged down time of the rearing units for a few months and temporary vaccination of the parent flocks and the broilers.[/TD]
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[TD] Control measures
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[TD="class: filtrer_th ta_left"]Measures applied[/TD]
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  • Movement control inside the country
  • Traceability
  • Quarantine
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
  • Slaughter
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
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[TD="class: filtrer_th ta_left"]Measures to be applied[/TD]
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  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
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[TD] Diagnostic test results
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[TD="class: filtrer_th ta_left"]Laboratory name and type[/TD]
[TD="class: filtrer_th ta_left"]Species[/TD]
[TD="class: filtrer_th ta_left"]Test[/TD]
[TD="class: filtrer_th ta_left"]Test date[/TD]
[TD="class: filtrer_th ta_left last"]Result[/TD]
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[TD="class: filtrer"]National Veterinary Institute SVA, Sweden (Foreign laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]antibody detection ELISA[/TD]
[TD="class: filtrer"]20/08/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
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[TD="class: filtrer"]GD Animal Health, Netherlands (Private Laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]polymerase chain reaction (PCR)[/TD]
[TD="class: filtrer"]09/09/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
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[TD] Future Reporting
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[TD="class: filtrer"]The event is continuing. Weekly follow-up reports will be submitted.[/TD]
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https://www.oie.int/wahis_2/public/...?page_refer=MapFullEventReport&reportid=31829
 
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