OIE: Highly pathogenic avian influenza ,Chinese Taipei

Information received on 11/01/2015 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	08/01/2015
Date of pre-confirmation of the event	11/01/2015
Report date	11/01/2015
Date submitted to OIE	11/01/2015
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	H5N8
Nature of diagnosis	Clinical, Laboratory (advanced)
This event pertains to	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

CHIAYI COUNTY ( Da-Lin Township )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	5200	3683	3683

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	70.83%	70.83%	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 mortality was noticed and reported to the local disease control center by the owner of the breeding goose farm. Two dead geese were taken from the farm for diagnosis and the farm has been put under movement restrictions since then.
Specific RNA product of avian influenza virus was detected and subtyped as H5N8 by RT-PCR. Highly pathogenic avian influenza was confirmed by the National Laboratory based on sequencing analysis of HA0 cleavage site. All the geese on the infected farm will be culled. The actual number of culled geese will be available when stamping out will finish and be reported in the next follow-up report. Thorough cleaning and disinfection will be conducted after stamping out operation. Surrounding poultry farms within a 3 km radius of the infected farm 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	11/01/2015	Positive
Birds	reverse transcription - polymerase chain reaction (RT-PCR)	11/01/2015	Positive