OIE: Highly pathogenic avian influenza, Chinese Taipei

Information received on 29/07/2019 from Dr Wen-Jane Tu, Chief Veterinary Officer, Deputy Director General, Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Chinese Taipei

Summary

Report type	Follow-up report No. 141
Date of start of the event	07/01/2015
Date of confirmation of the event	11/01/2015
Report date	29/07/2019
Date submitted to OIE	29/07/2019
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	the whole 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) Follow-up report No. 87 (29/01/2018) Follow-up report No. 88 (09/02/2018) Follow-up report No. 89 (12/02/2018) Follow-up report No. 90 (23/02/2018) Follow-up report No. 91 (26/02/2018) Follow-up report No. 92 (05/03/2018) Follow-up report No. 93 (12/03/2018) Follow-up report No. 94 (20/03/2018) Follow-up report No. 95 (09/04/2018) Follow-up report No. 96 (16/04/2018) Follow-up report No. 97 (27/04/2018) Follow-up report No. 98 (01/05/2018) Follow-up report No. 99 (15/05/2018) Follow-up report No. 100 (21/05/2018) Follow-up report No. 101 (28/05/2018) Follow-up report No. 102 (04/06/2018) Follow-up report No. 103 (11/06/2018) Follow-up report No. 104 (26/06/2018) Follow-up report No. 105 (02/07/2018) Follow-up report No. 106 (12/07/2018) Follow-up report No. 107 (07/08/2018) Follow-up report No. 108 (21/08/2018) Follow-up report No. 109 (04/09/2018) Follow-up report No. 110 (10/09/2018) Follow-up report No. 111 (26/09/2018) Follow-up report No. 112 (08/10/2018) Follow-up report No. 113 (09/10/2018) Follow-up report No. 114 (29/10/2018) Follow-up report No. 115 (13/11/2018) Follow-up report No. 116 (04/12/2018) Follow-up report No. 117 (17/12/2018) Follow-up report No. 118 (25/12/2018) Follow-up report No. 119 (04/01/2019) Follow-up report No. 120 (11/01/2019) Follow-up report No. 121 (21/01/2019) Follow-up report No. 122 (28/01/2019) Follow-up report No. 123 (26/02/2019) Follow-up report No. 124 (05/03/2019) Follow-up report No. 125 (12/03/2019) Follow-up report No. 126 (18/03/2019) Follow-up report No. 127 (29/03/2019) Follow-up report No. 128 (08/04/2019) Follow-up report No. 129 (09/04/2019) Follow-up report No. 130 (16/04/2019) Follow-up report No. 131 (26/04/2019) Follow-up report No. 132 (30/04/2019) Follow-up report No. 133 (14/05/2019) Follow-up report No. 134 (24/05/2019) Follow-up report No. 135 (29/05/2019) Follow-up report No. 136 (18/06/2019) Follow-up report No. 137 (25/06/2019) Follow-up report No. 138 (03/07/2019) Follow-up report No. 139 (09/07/2019) Follow-up report No. 140 (17/07/2019) Follow-up report No. 141 (29/07/2019)

New outbreaks (2)

Outbreak 1 (2019-ch-12)

Fangyuan Township, Changhua County

Date of start of the outbreak

12/07/2019

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	1531		0	1531	0

Affected population

Meat Ducks(2019-ch-12)

Outbreak 2 (2019-yl-25)

Yuanchang Township, Yunlin County

Date of start of the outbreak

15/07/2019

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	22809	290	290	22519	0

Affected population

Native Chickens(2019-yl-25)

Summary of outbreaks

Total outbreaks: 2

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	24340	290 **	290	24050	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	**	1.19%	**	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 and Yunlin County were sent to the National Chung Hsing University (NCHU) and 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.

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
National Chung Hsing University (NCHU) (Local laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	17/07/2019	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	18/07/2019	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	gene sequencing	20/07/2019	Positive
Animal Health Research Institute (AHRI) (National laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	17/07/2019	Positive

Future Reporting

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