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US - 3 new outbreaks of Tilapia lake virus in commercial farms, Idaho, Wyoming, Colorado (OIE, May 06, 2019)

Pathfinder

Pathfinder

Editor, Senior Moderator
[TABLE="class: TableChoisir, border: 0, cellpadding: 0, cellspacing: 0"]
[TR]
[TD]

[TD="width: *, align: left"] Tilapia lake virus,
United States of America
[/TD]
[TD="width: 1%, align: right"] [/TD]
[/TD]
[/TR]
[TR]
[TD] [TABLE="class: TableChoisir, border: 0, cellpadding: 0, cellspacing: 0"]
[TR]
[TD="class: topbigtabletitle27"]Information received on 08/05/2019 from Dr Jack Shere, Deputy Administrator Chief Veterinary Office r, USDA-APHISVeterinary Services, USA United States Department of Agriculture, WASHINGTON, United States of America[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD] Summary
[TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer_th, width: 10%"]Report type[/TD]
[TD="width: 30%"]Immediate notification[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]05/11/2018[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]22/03/2019[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Report date[/TD]
[TD="width: 30%"]06/05/2019[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]08/05/2019[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]Emerging disease[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Morbidity[/TD]
[TD="width: 30%"]2.5 (scale 0 to 5)[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Mortality[/TD]
[TD="width: 30%"]2.5 (scale 0 to 5)[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Zoonotic impact[/TD]
[TD="width: 30%"]No[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Tilapia lake virus[/TD]
[/TR]
[TR]
[TD="class: filtrer_th, width: 10%"]Serotype[/TD]
[TD="width: 30%"]Other[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD] New outbreaks (3)
[TABLE="class: TableFoyers, width: 918"]
[/TABLE]

[/TD]
[/TR]
[TR]
[TD] [TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer_th ta_left, align: left"]Outbreak 1[/TD]
[TD="class: filtrer_th ta_left"]Caribou County, Caribou, Idaho[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Date of start of the outbreak[/TD]
[TD]05/11/2018[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Outbreak status[/TD]
[TD]Resolved (02/05/2019)[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Epidemiological unit[/TD]
[TD]Farm[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Water type[/TD]
[TD]Fresh water[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Population type[/TD]
[TD]Farmed[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Production system[/TD]
[TD]Semi-closed[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Affected animals[/TD]
[TD] [TABLE="class: TableFoyers, width: 723"]
[TR]
[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Morbidity[/TD]
[TD="class: filtrer_th ta_center last"]Mortality[/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]
[TR]
[TD]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: ta_right"]2 (scale 0 to 5)[/TD]
[TD="class: ta_right"]2 (scale 0 to 5)[/TD]
[TD="class: ta_right"]154000[/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"]22000[/TD]
[TD="class: ta_right"] [/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Affected population[/TD]
[TD]Multiple age class commercial farm.[/TD]
[/TR]
[/TABLE]

[/TD]
[/TR]
[TR]
[TD] [TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer_th ta_left, align: left"]Outbreak 2[/TD]
[TD="class: filtrer_th ta_left"]Niobrara County, Niobrara, Wyoming[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Date of start of the outbreak[/TD]
[TD]07/12/2018[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Outbreak status[/TD]
[TD]Continuing (or date resolved not provided)[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Epidemiological unit[/TD]
[TD]Farm[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Water type[/TD]
[TD]Fresh water[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Population type[/TD]
[TD]Farmed[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Production system[/TD]
[TD]Closed[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Affected animals[/TD]
[TD] [TABLE="class: TableFoyers, width: 723"]
[TR]
[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Morbidity[/TD]
[TD="class: filtrer_th ta_center last"]Mortality[/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]
[TR]
[TD]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: ta_right"]3 (scale 0 to 5)[/TD]
[TD="class: ta_right"]3 (scale 0 to 5)[/TD]
[TD="class: ta_right"]30000[/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"]11500[/TD]
[TD="class: ta_right"] [/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Affected population[/TD]
[TD]Multiple age class commercial farm.[/TD]
[/TR]
[/TABLE]

[/TD]
[/TR]
[TR]
[TD] [TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer_th ta_left, align: left"]Outbreak 3[/TD]
[TD="class: filtrer_th ta_left"]Fremont County, Fremont, Colorado[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Date of start of the outbreak[/TD]
[TD]22/04/2019[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Outbreak status[/TD]
[TD]Continuing (or date resolved not provided)[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Epidemiological unit[/TD]
[TD]Farm[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Water type[/TD]
[TD]Fresh water[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Population type[/TD]
[TD]Farmed[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Production system[/TD]
[TD]Closed[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Affected animals[/TD]
[TD] [TABLE="class: TableFoyers, width: 723"]
[TR]
[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Morbidity[/TD]
[TD="class: filtrer_th ta_center last"]Mortality[/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]
[TR]
[TD]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: ta_right"]1 (scale 0 to 5)[/TD]
[TD="class: ta_right"]0 (scale 0 to 5)[/TD]
[TD="class: ta_right"]22000[/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"]0[/TD]
[TD="class: ta_right"] [/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Affected population[/TD]
[TD]Multiple age class commercial farm. No clinical signs of disease present at this facility.[/TD]
[/TR]
[/TABLE]

[/TD]
[/TR]
[TR]
[TD] [TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer_th ta_left, align: left"]Summary of outbreaks[/TD]
[TD="class: filtrer_th ta_left"]Total outbreaks: 3[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Total animals affected[/TD]
[TD] [TABLE="class: TableFoyers, width: 765"]
[TR]
[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]
[TR]
[TD]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: ta_right"]206000[/TD]
[TD="class: ta_right"]**[/TD]
[TD="class: ta_right"] [/TD]
[TD="class: ta_right"]33500[/TD]
[TD="class: ta_right"] [/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Outbreak statistics[/TD]
[TD] [TABLE="class: TableFoyers, width: 765"]
[TR]
[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]
[/TR]
[TR]
[TD]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: ta_right"]**[/TD]
[TD="class: ta_right"]**[/TD]
[TD="class: ta_right"]**[/TD]
[TD="class: ta_right"]**[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left, colspan: 2"]*Removed from the susceptible population through death, destruction and/or slaughter[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left, colspan: 2"]**Not calculated because of missing information[/TD]
[/TR]
[/TABLE]

[/TD]
[/TR]
[TR]
[TD] Epidemiology
[TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer_th ta_left"]Source of the outbreak(s) or origin of infection[/TD]
[TD]
  • Introduction of new live animals
[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Epidemiological comments[/TD]
[TD]The United States Department of Agriculture (USDA) Animal Plant Health Inspection Services (APHIS) and the State Departments of Agriculture are conducting a comprehensive epidemiological investigation of this event. The epidemiological investigation determined that clinical signs consistent with Tilapia lake virus (TiLV) were first observed on the index premises in November 2018. All clinically ill fish were depopulated. Exposed fish in the same tanks will either be depopulated or sent to terminal market. The affected holdings will be cleaned and disinfected. Surveillance and testing related to this event are ongoing. This is the first detection of TiLV in the United States.[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD] [/TD]
[/TR]
[TR]
[TD] Control measures
[TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer_th ta_left"]Measures applied[/TD]
[TD]
  • Surveillance outside infected and/or protection zone
  • Quarantine
  • Selective killing and disposal
  • Disinfection
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
[/TD]
[/TR]
[TR]
[TD="class: filtrer_th ta_left"]Measures to be applied[/TD]
[TD]
  • No other measures
[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD] Diagnostic test results
[TABLE="class: TableFoyers, width: 917"]
[TR]
[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]
[/TR]
[TR]
[TD="class: filtrer"]National Veterinary Services Laboratories (National laboratory)[/TD]
[TD="class: filtrer"]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: filtrer"]gene sequencing[/TD]
[TD="class: filtrer"]15/03/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
[/TR]
[TR]
[TD="class: filtrer"]National Veterinary Services Laboratories (National laboratory)[/TD]
[TD="class: filtrer"]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: filtrer"]reverse transcription - polymerase chain reaction (RT-PCR)[/TD]
[TD="class: filtrer"]08/03/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
[/TR]
[TR]
[TD="class: filtrer"]National Veterinary Services Laboratories (National laboratory)[/TD]
[TD="class: filtrer"]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: filtrer"]reverse transcription - polymerase chain reaction (RT-PCR)[/TD]
[TD="class: filtrer"]29/04/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
[/TR]
[TR]
[TD="class: filtrer"]National Veterinary Services Laboratories (National laboratory)[/TD]
[TD="class: filtrer"]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: filtrer"]virus isolation[/TD]
[TD="class: filtrer"]22/03/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
[/TR]
[TR]
[TD="class: filtrer"]Private Laboratory (Private Laboratory)[/TD]
[TD="class: filtrer"]Nile Tilapia (Oreochromis niloticus)[/TD]
[TD="class: filtrer"]virus isolation[/TD]
[TD="class: filtrer"]26/02/2019[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD] Future Reporting
[TABLE="class: TableFoyers, width: 917"]
[TR]
[TD="class: filtrer"]The event is continuing. Weekly follow-up reports will be submitted.[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[/TABLE]

...
http://www.oie.int/wahis_2/public/w...?page_refer=MapFullEventReport&reportid=30412
 
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