OIE: Highly pathogenic avian influenza(H5N5), Chinese Taipei

Information received on 23/09/2019 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	Immediate notification
Date of start of the event	09/09/2019
Date of confirmation of the event	13/09/2019
Report date	23/09/2019
Date submitted to OIE	23/09/2019
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

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

Kaohsiung City ( Qishan District )

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	3583	**	0	3583	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	**	0.00%	**	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

During active surveillance program, samples collected on 9 September 2019 from one duck farm in Kaohsiung City were sent to the National Laboratory, Animal Health Research Institute (AHRI) for analysis. Highly pathogenic avian influenza H5N5 subtype was confirmed by AHRI on 13 September 2019. The farm has been placed under movement restriction. All animals in this infected farm have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation.
Surrounding poultry farms (2 duck farms, 2 native chicken farms and 1 layer chicken farm) within a three-kilometer radius of the infected farm are clinically healthy and test results of HPAI are all negative, and they are under intensified surveillance for 3 months to detect, if any, spreading of the virus. Chinese Taipei therefore considers that HPAI H5N5 subtype virus has not been spread.

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 Zoning Disinfection Vaccination prohibited No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type

Animal Health Research Institute (AHRI) ( National laboratory )

Tests and results

Species

Test