Taiwan - 1 new outbreak of highly pathogenic influenza H5N8 in birds in farm, Tainan City (OIE, March 27, 2017)

[Pathfinder]

Highly pathogenic avian influenza, Chinese Taipei

Information received on 29/03/2017 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 Follow-up report No. 35 Date of start of the event 08/01/2015 Date of confirmation of the event 11/01/2015 Report date 27/03/2017 Date submitted to OIE 29/03/2017 Reason for notification Reoccurrence of a listed disease Date of previous occurrence 23/07/2014 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Clinical, Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (11/01/2015) Follow-up report No. 1 (13/01/2015) Follow-up report No. 2 (14/01/2015) Follow-up report No. 3 (16/01/2015) Follow-up report No. 4 (20/01/2015) Follow-up report No. 5 (21/01/2015) Follow-up report No. 6 (28/01/2015) Follow-up report No. 7 (04/02/2015) Follow-up report No. 8 (11/02/2015) Follow-up report No. 9 (17/02/2015) Follow-up report No. 10 (26/02/2015) Follow-up report No. 11 (04/03/2015) Follow-up report No. 12 (12/03/2015) Follow-up report No. 13 (24/04/2015) Follow-up report No. 14 (01/05/2015) Follow-up report No. 15 (12/05/2015) Follow-up report No. 16 (18/05/2015) Follow-up report No. 17 (29/05/2015) Follow-up report No. 18 (07/07/2015) Follow-up report No. 19 (11/08/2015) Follow-up report No. 20 (04/09/2015) Follow-up report No. 21 (08/12/2015) Follow-up report No. 22 (04/01/2016) Follow-up report No. 23 (02/02/2016) Follow-up report No. 24 (22/02/2016) Follow-up report No. 25 (07/03/2016) Follow-up report No. 26 (11/04/2016) Follow-up report No. 27 (19/04/2016) Follow-up report No. 28 (05/05/2016) Follow-up report No. 29 (22/07/2016) Follow-up report No. 30 (08/12/2016) Follow-up report No. 31 (23/12/2016) Follow-up report No. 32 (09/01/2017) Follow-up report No. 33 (07/03/2017) Follow-up report No. 34 (17/03/2017) Follow-up report No. 35 (27/03/2017)

New outbreaks (1)

Outbreak 1 (2017-tn-10) Guanmiao District, TAINAN CITY Date of start of the outbreak 23/03/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 8879 640 640 8239 0 Affected population Chickens (2017-tn-10)

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 8879 640 640 8239 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 7.21% 7.21% 100.00% 100.00% *Removed from the susceptible population through death, destruction and/or slaughter

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive Epidemiological comments Samples from one poultry farm in Tainan City were sent to the National Laboratory, Animal Health Research Institute (AHRI) for analysis. Highly pathogenic avian influenza H5N8 subtype was confirmed by AHRI. The farm has been placed under movement restriction. All animals on the infected farm were culled. Thorough cleaning and disinfection have been conducted after stamping out operation. Surrounding poultry farms within 3 km radius of the infected farm are under intensified surveillance for three months.

Control measures Measures applied Movement control inside the country Screening Disinfection / Disinfestation Quarantine Stamping out Zoning 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 (AHRI) (National laboratory) Birds gene sequencing 26/03/2017 Positive Animal Health Research Institute (AHRI) (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 25/03/2017 Positive

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

...

http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=23380