Low pathogenic avian influenza (poultry),
Australia
Information received on 11/08/2020 from Dr Mark Schipp, Chief Veterinary Officer, Department of Agriculture, Water and the Environment, Australian Government, Canberra, Australia
Summary
Report type Immediate notification
Date of start of the event 07/08/2020
Date of confirmation of the event 10/08/2020
Report date 11/08/2020
Date submitted to OIE 11/08/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 27/06/2013
Manifestation of disease Clinical disease
Causal agent Low pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (11/08/2020)
Follow-up report No. 1 (18/08/2020)
Follow-up report No. 2 (25/08/2020)
Follow-up report No. 3 (04/09/2020)
New outbreaks (2)
Outbreak 1 Bairnsdale, Victoria
Date of start of the outbreak 07/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 5440 34 5406 0
Affected population 3000 18 week old turkeys, including 7-800 moved from the Lethbridge property. 2440 3-4 week old turkey poults.
Outbreak 2 Lethbridge, Victoria
Date of start of the outbreak 08/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 7200 7200 0
Affected population 4500 mixed age turkeys and 2700 spent layer hen/rooster on a property within the current restricted area established for HPAI
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 12640 ** 34 12606 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** ** ** **
*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
  • Contact with wild species
Epidemiological comments A mixed turkey/ spent layer hen farm within the existing restricted area for HPAI was sampled following notification of clinical signs. A second commercial turkey farm near Bairnsdale was investigated due to recent movement of 7-800 turkeys from the first property.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Quarantine
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
Australian Centre for Disease Preparedness (OIE Reference Laboratory) Birds gene sequencing 09/08/2020 Positive
Australian Centre for Disease Preparedness (OIE Reference Laboratory) Birds real-time PCR 09/08/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations