Taiwan - 1 new outbreak of highly pathogenic avian influenza H5N8 on duck farm in Pingtung County (OIE, February 6, 2018)

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Highly pathogenic avian influenza, Chinese Taipei

Information received on 07/02/2018 from Dr Tai-Hwa Shih, Chief Veterinary Officer, Deputy Director General, Bureau of Animal and Plant Health Inspection and Quarantine Council of Agriculture Executive Yuan, Ministry of Agriculture, Taipei, Chinese Taipei

Summary Report type Immediate notification Date of start of the event 31/01/2018 Date of confirmation of the event 06/02/2018 Report date 06/02/2018 Date submitted to OIE 07/02/2018 Reason for notification Recurrence of a listed disease Date of previous occurrence 11/10/2017 Manifestation of disease Sub-clinical infection Causal agent Highly pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Laboratory (basic), Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (1)

Outbreak 1 (2018-pt-1) Chaozhou Township, PINGTUNG COUNTY Date of start of the outbreak 31/01/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3136 0 3136 0 Affected population Meat ducks (2018-pt-1)

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3136 ** 0 3136 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds ** 0.00% ** 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 Unknown or inconclusive Epidemiological comments During active surveillance program, samples collected on Jan. 31, 2018 from one duck farm in Pingtung County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for analysis. Highly pathogenic avian influenza H5N8 subtype was confirmed by AHRI on Feb. 06, 2018. The farm has been placed under movement restriction. All animals in this infected farm have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation. Surrounding poultry farms within a three-kilometer radius of the infected farm are under intensified surveillance for three months.

Control measures Measures applied Movement control inside the country Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Quarantine Official disposal of carcasses, by-products and waste Stamping out Disinfection Ante and post-mortem inspections Vaccination prohibited No treatment of affected animals Measures to be applied No other measures

Diagnostic test results Laboratory name and type Species Test Test date Result Animal Health Research Institute (National laboratory) Birds gene sequencing 06/02/2018 Positive Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 05/02/2018 Positive

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

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