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Taiwan - 1 new outbreak of low pathogenic avian influenza H7N7 in a duck farm in Yilan County (OIE, May 13, 2019)

Pathfinder

Pathfinder

Editor, Senior Moderator
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[TD="width: *, align: left"] Low pathogenic avian influenza (poultry),
Chinese Taipei
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[TD="width: 1%, align: right"] [/TD]
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[TD="class: topbigtabletitle27"]Information received on 13/05/2019 from Dr Wen-Jane Tu, Chief Veterinary Officer, Deputy Director General, Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Chinese Taipei[/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 (Final report)[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]10/01/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]29/04/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Report date[/TD]
[TD="width: 30%"]13/05/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]13/05/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Date event resolved[/TD]
[TD="width: 30%"]07/05/2019[/TD]
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[TD="class: filtrer_th, width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]New strain of a listed disease in the country[/TD]
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[TD="class: filtrer_th, width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Low pathogenic avian influenza virus[/TD]
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[TD="class: filtrer_th, width: 10%"]Serotype[/TD]
[TD="width: 30%"]H7N7[/TD]
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[TD="class: filtrer_th, width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Laboratory (advanced)[/TD]
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[TD="class: filtrer_th, width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]a defined zone within the country[/TD]
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[TD] New outbreaks (1)
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[TD="class: filtrer_th ta_left, align: left"]Outbreak 1 (H7N7-LPAI-2019)[/TD]
[TD="class: filtrer_th ta_left"]Jiaoxi Township, Yilan County[/TD]
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[TD="class: filtrer_th ta_left"]Date of start of the outbreak[/TD]
[TD]10/01/2019[/TD]
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[TD="class: filtrer_th ta_left"]Outbreak status[/TD]
[TD]Resolved (07/05/2019)[/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: 634"]
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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"]1300[/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"]0[/TD]
[TD="class: ta_right"]0[/TD]
[TD="class: ta_right"]0[/TD]
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[TD="class: filtrer_th ta_left"]Affected population[/TD]
[TD]Breeding ducks(2019-yi-1)[/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]
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[TD]Birds[/TD]
[TD="class: ta_right"]1300[/TD]
[TD="class: ta_right"]**[/TD]
[TD="class: ta_right"]0[/TD]
[TD="class: ta_right"]0[/TD]
[TD="class: ta_right"]0[/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"]**[/TD]
[TD="class: ta_right"]0.00%[/TD]
[TD="class: ta_right"]**[/TD]
[TD="class: ta_right"]0.00%[/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="class: filtrer_th ta_left, colspan: 2"]**Not calculated because of missing information[/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]
[TD]
  • Unknown or inconclusive
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[TD="class: filtrer_th ta_left"]Epidemiological comments[/TD]
[TD]This duck farm in Yilan County was sampled by the staff of the Local Animal Disease Inspection Authority (LADIA, formerly named as Local Disease Control Centre, LDCC) for active surveillance on 10 January 2019. H7N7 subtype of low pathogenic avian influenza (LPAI) was detected and confirmed by the National Laboratory, Animal Health Research Institute (AHRI), in the evening of 29 April 2019. Highly pathogenic avian influenza (HPAI) was excluded through an intravenous lethality test (inoculation test) that day. The LADIA implemented movement control on this duck farm and disinfected its neighbouring areas. The LADIA has completed the three-month intensified surveillance which includes clinical examination and sampling of the index farm and all poultry farms (eight chicken farms and 13 duck farms) within 3 km radius of the index farm. All poultry in those farms were clinically healthy and the test results were all negative. Chinese Taipei therefore declares that the event has been resolved.[/TD]
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[TD] Control measures
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[TD="class: filtrer_th ta_left"]Measures applied[/TD]
[TD]
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Traceability
  • Quarantine
  • Control of wildlife reservoirs
  • Disinfection
  • Vaccination prohibited
  • No treatment of affected animals
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[TD="class: filtrer_th ta_left"]Measures to be applied[/TD]
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  • No other measures
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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"]Animal Health Research Institute (AHRI) (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]gene sequencing[/TD]
[TD="class: filtrer"]21/01/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
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[TD="class: filtrer"]Animal Health Research Institute (AHRI) (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]inoculation test[/TD]
[TD="class: filtrer"]29/04/2019[/TD]
[TD="class: filtrer cb-centree last"]Negative[/TD]
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[TD="class: filtrer"]Animal Health Research Institute (AHRI) (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]reverse transcription - polymerase chain reaction (RT-PCR)[/TD]
[TD="class: filtrer"]21/01/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
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[TD="class: filtrer"]Animal Health Research Institute (AHRI) (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]virus isolation[/TD]
[TD="class: filtrer"]28/01/2019[/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 resolved. No more reports will be submitted.[/TD]
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http://www.oie.int/wahis_2/public/w...?page_refer=MapFullEventReport&reportid=30402
 
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