OIE: Highly pathogenic avian influenza ,Chinese Taipei

Information received on 16/01/2015 from Dr Ping-Cheng Yang, Vice President, Agriculture Technology Research Institute, Council of Agriculture, Hsinchu City, Chinese Taipei

Summary

Report type	Immediate notification
Date of start of the event	11/01/2015
Date of pre-confirmation of the event	13/01/2015
Report date	16/01/2015
Date submitted to OIE	16/01/2015
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	23/07/2014
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H5N3
Nature of diagnosis	Clinical, Laboratory (advanced)
This event pertains to	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 2

Outbreak Location

PINGTUNG COUNTY ( Wandan Township )
KAOHSIUNG ( Luzhu District )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	2720	2387	2387	333	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	87.76%	87.76%	100.00%	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

Abnormal mortalities were observed in two goose farms in Kao-Hsiung City and Ping-Tung County. Local disease control center staff went to these farms to conduct movement restrictions and clinical inspection. Dead geese were taken to the National Laboratory (Animal Health Research Institute, AHRI) for diagnosis. Specific RNA of avian influenza virus was detected and subtyped as H5N3 by RT-PCR. Highly pathogenic avian influenza was confirmed by the National Laboratory according to sequencing analysis of HA0 cleavage site. All the geese within the infected farms were destroyed or died. Thorough cleaning and disinfection will be conducted after stamping out operation. Surrounding poultry farms within 3 km radius of infected farms are under intensified surveillance for 3 months.

Control measures

Measures applied	Stamping out Quarantine Movement control inside the country Screening Zoning Disinfection of infected premises/establishment(s) 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	Test date	Result
Birds	gene sequencing	15/01/2015	Positive
Birds	reverse transcription - polymerase chain reaction (RT-PCR)	13/01/2015	Posit