OIE: Highly pathogenic avian influenza(H5N2), Chinese Taipei

OIE: Highly pathogenic avian influenza(H5N2), Chinese Taipei
submited by kickingbird at Apr, 13, 2017 9:38 AM from OIE

Information received on 10/04/2017 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. 56
Date of start of the event	07/01/2015
Date of confirmation of the event	11/01/2015
Report date	10/04/2017
Date submitted to OIE	10/04/2017
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)

New outbreaks (10)

Outbreak 1 (2017-yl-56)

Dongshi Township, YUNLIN COUNTY

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	8349		0	8349	0

Affected population

Native chickens (2017-yl-56)

Outbreak 2 (2017-cy-9)

Liujiao Township, CHIAYI COUNTY

Date of start of the outbreak

24/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	13649	300	300	13349	0

Affected population

Native chickens (2017-cy-9)

Outbreak 3 (2017-cy-10)

Zhongpu Township, CHIAYI COUNTY

Date of start of the outbreak

25/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	8605	70	70	8535	0

Affected population

Chickens (2017-cy-10)

Outbreak 4 (2017-ch-8)

Erlin Township, CHANGHUA COUNTY

Date of start of the outbreak

27/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	21313	4324	4324	16989	0

Affected population

Native chickens (2017-ch-8)

Outbreak 5 (2017-tn-13)

Xiaying District, TAINAN CITY

Date of start of the outbreak

27/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	5287		0	5287	0

Affected population

Ducks (2017-tn-13)

Outbreak 6 (2017-nt-1)

Zhushan Township, NANTOU COUNTY

Date of start of the outbreak

27/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	3827		0	3827	0

Affected population

Ducks (2017-nt-1)

Outbreak 7 (2017-yl-57)

Taixi Township, YUNLIN COUNTY

Date of start of the outbreak

29/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	30861	300	300	30561	0

Affected population

Native chickens (2017-yl-57)

Outbreak 8 (2017-yl-58)

Citong Township, YUNLIN COUNTY

Date of start of the outbreak

31/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	2295	400	400	1895	0

Affected population

Native chickens (2017-yl-58)

Outbreak 9 (2017-yl-59)

Shuilin Township, YUNLIN COUNTY

Date of start of the outbreak

31/03/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	16680	380	380	16300	0

Affected population

Native chickens (2017-yl-59)

Outbreak 10 (2017-ntai-1)

Taishan District, NEW TAIPEI CITY

Date of start of the outbreak

01/04/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Slaughterhouse

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	93		0	93	0

Affected population

Native chickenws in abattoir(2017-ntai-1)

Summary of outbreaks

Total outbreaks: 10

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	110959	5774 **	5774	105185	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	**	5.20%	**	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 9 poultry farms in Nantou County, Yunlin County, Chiayi County, Changhua County and Tainan City 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 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 a 3 km radius of the infected farms are under intensified surveillance for 3 months. Suspected signs were observed in poultry carcasses during post-mortem inspection in 1 abattoir in New 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 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	gene sequencing	27/03/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	28/03/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	30/03/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	01/04/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	02/04/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	03/04/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	25/03/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	26/03/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	27/03/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	29/03/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	01/04/2017	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	02/04/2017	Positive
William Binney (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	31/03/2017	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=23472

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