OIE: Highly pathogenic avian influenza ,Australia

Information received on 16/10/2013 from Dr Mark Schipp, Chief Veterinary Officer, Ministry of Agriculture, Fisheries and Forestry, Ministry of Agriculture, Fisheries and Forestry, Canberra, Australia

Summary

Report type	Immediate notification
Date of start of the event	08/10/2013
Date of pre-confirmation of the event	14/10/2013
Report date	16/10/2013
Date submitted to OIE	16/10/2013
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	20/03/2013
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H7N2
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

NEW SOUTH WALES ( Young )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	435000	18000	18000	0	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	4.14%	4.14%	100.00%	4.14%

* 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	A Restricted Area of 1km diameter surrounded by a 10km diameter Control Area has been established around the property, which is under quarantine restriction. Tracing of all movements (birds, people, vehicles and eggs) are under way. An epidemiological investigation is under way to determine the source of the infection.

Control measures

Measures applied	Quarantine Movement control inside the country Screening Zoning Vaccination prohibited No treatment of affected animals
Measures to be applied	Stamping out Disinfection of infected premises/establishment(s)

Diagnostic test results

Laboratory name and type

Elizabeth Macarthur Agricultural Institute ( Local laboratory )

Tests and results

Species	Test	Test date	Result
Birds	polymerase chain reaction (PCR)	14/10/2013	Positive

Laboratory name and type

Australian Animal Health Laboratory ( National laboratory )

Tests and results

Species	Test	Test date	Result
Birds	gene sequencing	16/10/2013	Positive
Birds	polymerase chain reaction (PCR)	15/10/2013	Positive

Future Reporting

The event is continuing. Weekly follow-up reports will be submitted.