Information received on 31/12/2020 from Dr Wen-Jane Tu, Chief Veterinary Officer, Director General, Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Chinese Taipei
Summary
Report type
Immediate notification (Final report)
Date of start of the event
15/12/2020
Date of confirmation of the event
29/12/2020
Report date
31/12/2020
Date submitted to OIE
31/12/2020
Date event resolved
31/12/2020
Reason for notification
Recurrence of a listed disease
Date of previous occurrence
10/2019
Manifestation of disease
Sub-clinical infection
Causal agent
Highly pathogenic influenza A virus
Serotype
H5
Nature of diagnosis
Laboratory (advanced)
This event pertains to
a defined zone within the country
New outbreaks (1)

Outbreak 1 (2020-wild-bird-1-Chiayi-H5-1)
Dongshi Township, Chiayi County
Date of start of the outbreak
15/12/2020
Outbreak status
Resolved (31/12/2020)
Epidemiological unit
Natural park
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Northern Pintail:Anas acuta(Anatidae)

1
0
0
0
Affected population
One Anas acuta in Aogu Wetland Forest Park was sampled by the National Pingtung University of Science and Technology on 15 December 2020.
Summary of outbreaks
Total outbreaks: 1
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Northern Pintail:Anas acuta(Anatidae)

1
0
0
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Northern Pintail:Anas acuta(Anatidae)
**
**
0.00%
**
*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
One Anas acuta in Chiayi County was sampled by the National Pingtung University of Science and Technology on 15 December 2020 and was sent to the Animal Health Research Institute (AHRI) on 25 December 2020. Highly pathogenic avian influenza H5 subtype was detected and confirmed by the AHRI on 29 December 2020. The Local Animal Disease Inspection Authority (LADIA) disinfected the neighbouring areas of the spot where the Anas acuta was found. To prevent the outbreak from spreading, a 3-km-radius surveillance zone is imposed around the bird picked up spot. The LADIA has conducted clinical investigation and confirmed that there are no poultry farms within the 3 km radius around the spot.

Control measures
Measures applied
Surveillance outside containment and/or protection zone
Surveillance within containment and/or protection zone
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 (National laboratory)
Northern Pintail
gene sequencing
29/12/2020
Positive
Future Reporting
The event is resolved. No more reports will be submitted.