Taiwan - 5 new outbreaks of highly pathogenic avian influenza H5N2 in birds in slaughterhouse and farms, Kaohsiung, Pingtung, Chiayi, Yunlin (OIE, January 5, 2018)

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Highly pathogenic avian influenza, Chinese Taipei

Information received on 08/01/2018 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 Follow-up report No. 83 Date of start of the event 07/01/2015 Date of confirmation of the event 11/01/2015 Report date 05/01/2018 Date submitted to OIE 08/01/2018 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) Follow-up report No. 74 (05/09/2017) Follow-up report No. 75 (11/10/2017) Follow-up report No. 76 (30/10/2017) Follow-up report No. 77 (06/11/2017) Follow-up report No. 78 (13/11/2017) Follow-up report No. 79 (20/11/2017) Follow-up report No. 80 (29/11/2017) Follow-up report No. 81 (12/12/2017) Follow-up report No. 82 (29/12/2017) Follow-up report No. 83 (05/01/2018)

New outbreaks (5)

Outbreak 1 (2016-kh-12) Hunei District, KAOHSIUNG CITY Date of start of the outbreak 25/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Slaughterhouse Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 9085 301 301 8784 0 Affected population Chickens in abattoir(2016-Kh-12)

Outbreak 2 (2016-pt-15) Yanpu Township, PINGTUNG COUNTY Date of start of the outbreak 26/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 10000 5151 5151 4849 0 Affected population Chickens(2017-pt-15)

Outbreak 3 (2016-cy-15) Liujiao Township, CHIAYI COUNTY Date of start of the outbreak 27/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1700 232 232 1468 0 Affected population Ducks(2016-cy-15)

Outbreak 4 (2016-pt-16) Fangliao Township, PINGTUNG COUNTY Date of start of the outbreak 27/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 5510 0 5510 0 Affected population Ducks(2016-pt-16)

Outbreak 5 (2016-yl-98) Yuanchang Township, YUNLIN COUNTY Date of start of the outbreak 28/12/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 17300 2061 2061 15239 0 Affected population Native chickens(2016-yl-98)

Summary of outbreaks Total outbreaks: 5 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 43595 7745 ** 7745 35850 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds ** 17.77% ** 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 Pintung County, Chiayi County and Yunlin County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. Highly pathogenic avian influenza H5N2 subtype was confirmed by AHRI. The infected farms have been placed under movement restriction. All animals on the infected farms have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation. Surrounding poultry farms within 3 km radius of the infected farms are under intensified surveillance for three months. Suspected signs were observed in poultry carcasses during post-mortem inspection in one abattoir in Kaohsiung City. 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. After tracing back to the farm of origin, any positive results will be included in follow-up reports.

Control measures Measures applied Movement control inside the country Disinfection / Disinfestation Screening Traceability Quarantine Surveillance outside containment and/or protection zone Official disposal of carcasses, by-products and waste Stamping out Surveillance within containment and/or protection zone 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 (National laboratory) Birds gene sequencing 29/12/2017 Positive Animal Health Research Institute (National laboratory) Birds gene sequencing 30/12/2017 Positive Animal Health Research Institute (National laboratory) Birds gene sequencing 01/01/2018 Positive Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 28/12/2017 Positive Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 29/12/2017 Positive Animal Health Research Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 31/12/2017 Positive

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

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