OIE: Highly pathogenic avian influenza, Chinese Taipei

OIE: Highly pathogenic avian influenza, Chinese Taipei
submited by kickingbird at Jan, 26, 2018 0:13 AM from OIE

Information received on 25/01/2018 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. 86
Date of start of the event	07/01/2015
Date of confirmation of the event	11/01/2015
Report date	23/01/2018
Date submitted to OIE	25/01/2018
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) Follow-up report No. 84 (15/01/2018) Follow-up report No. 85 (16/01/2018) Follow-up report No. 86 (23/01/2018)

New outbreaks (6)

Outbreak 1 (2018-ch-2)

ErlinTownship, CHANGHUA COUNTY

Date of start of the outbreak

05/01/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	1362		0	1362	0

Affected population

Meat ducks (2018-ch-2)

Outbreak 2 (2018-pt-4)

XinyuanTownship, PINGTUNG COUNTY

Date of start of the outbreak

11/01/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	1588		0	1588	0

Affected population

Meat ducks (2018-pt-4)

Outbreak 3 (2018-tp-1)

Wanhua District, TAIPEI CITY

Date of start of the outbreak

14/01/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Slaughterhouse

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	60		0	60	0

Affected population

Native chickens in abattoir (2018-tp-1)

Outbreak 4 (2018-ch-1)

Dacheng Township, CHANGHUA COUNTY

Date of start of the outbreak

15/01/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	19237	6925	6925	12312	0

Affected population

Native chickens (2018-ch-1)

Outbreak 5 (2018-cy-1)

XikouTownship, CHIAYI COUNTY

Date of start of the outbreak

16/01/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	5404	490	490	4914	0

Affected population

Turkeys (2018-cy-1)

Outbreak 6 (2018-pt-3)

Neipu Township, PINGTUNG COUNTY

Date of start of the outbreak

17/01/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	18727	8277	8277	10450	0

Affected population

Layer hens (2018-pt-3)

Summary of outbreaks

Total outbreaks: 6

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	46378	15692 **	15692	30686	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	**	33.84%	**	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 Changhua County,Chiayi County and Pintung 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 Taipei 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 destruction of animal products Official disposal of carcasses, by-products and waste Stamping out Surveillance within containment and/or protection zone 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	16/01/2018	Positive
Animal Health Research Institute (National laboratory)	Birds	gene sequencing	18/01/2018	Positive
Animal Health Research Institute (National laboratory)	Birds	gene sequencing	19/01/2018	Positive
Animal Health Research Institute (National laboratory)	Birds	gene sequencing	20/01/2018	Positive
Animal Health Research Institute (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	15/01/2018	Positive
Animal Health Research Institute (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	17/01/2018	Positive
Animal Health Research Institute (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	18/01/2018	Positive
Animal Health Research Institute (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	19/01/2018	Positive

Future Reporting

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

See Also:

http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=25769

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