Information received on 03/01/2020 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. 3
Date of start of the event
09/09/2019
Date of confirmation of the event
13/09/2019
Report date
03/01/2020
Date submitted to OIE
03/01/2020
Reason for notification
New strain of a listed disease in the country
Causal agent
Highly pathogenic avian influenza virus
Serotype
H5N5
Nature of diagnosis
Laboratory (advanced)
This event pertains to
a defined zone within the country
Related reports
Immediate notification (23/09/2019)
Follow-up report No. 1 (14/10/2019)
Follow-up report No. 2 (22/11/2019)
Follow-up report No. 3 (03/01/2020)
New outbreaks (2)

Outbreak 1 (2019-pt-3)
Yanpu Township, Pingtung County
Date of start of the outbreak
12/12/2019
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Farm
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
18018
1708
1708
16310
0
Affected population
Native chickens (2019-pt-3)
Outbreak 2 (2019-tp-2)
Wanhua District, Taipei City
Date of start of the outbreak
15/12/2019
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Slaughterhouse
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
10
1
0
10
0
Affected population
Native chickens (2019-tp-2)
Summary of outbreaks
Total outbreaks: 2
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
18028
1709
1708
16320
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Birds
9.48%
9.47%
99.94%
100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
Unknown or inconclusive
Epidemiological comments
The infected animals in the farm in Pingtung County were noticed with clinical signs and samples were sent by the Local Animal Disease Inspection Authority (LADIA) to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. H5N5 subtype HPAI was confirmed by AHRI. The infected 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 3 kilometers radius of the infected farm 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. H5N5 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
Surveillance outside containment and/or protection zone
Surveillance within containment and/or protection zone
Traceability
Quarantine
Stamping out
Zoning
Disinfection
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
15/12/2019
Positive
Animal Health Research Institute (AHRI) (National laboratory)
Birds
gene sequencing
17/12/2019
Positive
Animal Health Research Institute (AHRI) (National laboratory)
Birds
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2019
Positive
Animal Health Research Institute (AHRI) (National laboratory)
Birds
reverse transcription - polymerase chain reaction (RT-PCR)
16/12/2019
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.