Taiwan - 2 new outbreaks of highly pathogenic avian influenza H5N2 in poultry farm in Yunlin County and illegal private abattoir in Chiayi County (OIE, August 31, 2017)

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Highly pathogenic avian influenza, Chinese Taipei

Information received on 31/08/2017 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. 73 Date of start of the event 07/01/2015 Date of confirmation of the event 11/01/2015 Report date 31/08/2017 Date submitted to OIE 31/08/2017 Reason for notification Recurrence of a listed disease Date of previous occurrence 23/07/2014 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N2 Nature of diagnosis Clinical, Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (12/01/2015) Follow-up report No. 1 (13/01/2015) Follow-up report No. 2 (15/01/2015) Follow-up report No. 3 (16/01/2015) Follow-up report No. 4 (19/01/2015) 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 (19/03/2015) Follow-up report No. 14 (25/03/2015) Follow-up report No. 15 (02/04/2015) Follow-up report No. 16 (14/04/2015) Follow-up report No. 17 (17/04/2015) Follow-up report No. 18 (24/04/2015) Follow-up report No. 19 (01/05/2015) Follow-up report No. 20 (11/05/2015) Follow-up report No. 21 (18/05/2015) Follow-up report No. 22 (29/05/2015) Follow-up report No. 23 (04/06/2015) Follow-up report No. 24 (12/06/2015) Follow-up report No. 25 (18/06/2015) Follow-up report No. 26 (07/07/2015) Follow-up report No. 27 (13/07/2015) Follow-up report No. 28 (20/07/2015) Follow-up report No. 29 (27/07/2015) Follow-up report No. 30 (31/07/2015) Follow-up report No. 31 (11/08/2015) Follow-up report No. 32 (24/08/2015) Follow-up report No. 33 (04/09/2015) Follow-up report No. 34 (02/10/2015) Follow-up report No. 35 (21/10/2015) Follow-up report No. 36 (30/10/2015) Follow-up report No. 37 (08/12/2015) Follow-up report No. 38 (04/01/2016) Follow-up report No. 39 (15/01/2016) Follow-up report No. 40 (02/02/2016) Follow-up report No. 41 (22/02/2016) Follow-up report No. 42 (07/03/2016) Follow-up report No. 43 (11/04/2016) Follow-up report No. 44 (19/04/2016) Follow-up report No. 45 (05/05/2016) Follow-up report No. 46 (20/06/2016) Follow-up report No. 47 (21/09/2016) Follow-up report No. 48 (17/10/2016) Follow-up report No. 49 (09/01/2017) Follow-up report No. 50 (06/02/2017) Follow-up report No. 51 (01/03/2017) Follow-up report No. 52 (07/03/2017) Follow-up report No. 53 (17/03/2017) Follow-up report No. 54 (20/03/2017) Follow-up report No. 55 (27/03/2017) Follow-up report No. 56 (10/04/2017) Follow-up report No. 57 (11/04/2017) Follow-up report No. 58 (01/05/2017) Follow-up report No. 59 (08/05/2017) Follow-up report No. 60 (15/05/2017) Follow-up report No. 61 (03/06/2017) Follow-up report No. 62 (07/06/2017) Follow-up report No. 63 (16/06/2017) Follow-up report No. 64 (23/06/2017) Follow-up report No. 65 (27/06/2017) Follow-up report No. 66 (03/07/2017) Follow-up report No. 67 (11/07/2017) Follow-up report No. 68 (17/07/2017) Follow-up report No. 69 (24/07/2017) Follow-up report No. 70 (31/07/2017) Follow-up report No. 71 (07/08/2017) Follow-up report No. 72 (22/08/2017) Follow-up report No. 73 (31/08/2017)

New outbreaks (2)

Outbreak 1 (2017-yl-86) Dongshi Township, YUNLIN COUNTY Date of start of the outbreak 21/08/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 18685 5845 5845 12840 0 Affected population Native chickens (2017-yl-86)

Outbreak 2 (2017-cy-14) Xingang Township, CHIAYI COUNTY Date of start of the outbreak 23/08/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Not applicable Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3 0 3 0 Affected population Chickens (2017-cy-14)

Summary of outbreaks Total outbreaks: 2 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 18688 5845 ** 5845 12843 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds ** 31.28% ** 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 Samples from one poultry farm in Yunlin County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for analysis. Highly pathogenic avian influenza H5N2 subtype was confirmed by the AHRI. The farm has been placed under movement restriction. All animals on the infected farm have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation. Surrounding poultry farms within a 3 km radius of the infected farm are under intensified surveillance for three months. Poultry carcasses were found during inspection in one illegal private abbatoir in Chiayi County. Samples were sent to the AHRI for diagnosis. H5N2 subtype HPAI was confirmed by the AHRI. The carcasses were destroyed and thorough cleaning and disinfection have been conducted in the abattoir. We have been attemping to trace back to the farm of origin. Any positive outcome will be included in the follow-up reports. Surrounding poultry farms within a 3 km radius of the infected farm are under intensified surveillance for three months.

Control measures Measures applied Movement control inside the country Disinfection / Disinfestation Screening Quarantine Stamping out Zoning Vaccination prohibited No treatment of affected animals Measures to be applied Traceability

Diagnostic test results Laboratory name and type Species Test Test date Result Animal Health Research Institute (National laboratory) Birds gene sequencing 24/08/2017 Positive Animal Health Research Institute (National laboratory) Birds gene sequencing 25/08/2017 Positive Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 23/08/2017 Positive

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

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