Highly pathogenic avian influenza,
Australia
Information received on 31/07/2020 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 24/07/2020
Date of confirmation of the event 31/07/2020
Report date 31/07/2020
Date submitted to OIE 31/07/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 21/02/2014
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H7N7
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (31/07/2020)
Follow-up report No. 1 (07/08/2020)
Follow-up report No. 2 (11/08/2020)
Follow-up report No. 3 (18/08/2020)
Follow-up report No. 4 (25/08/2020)
Follow-up report No. 5 (04/09/2020)
New outbreaks (1)
Outbreak 1 Lethbridge, Victoria
Date of start of the outbreak 24/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 43500 43500 1669 41831 0
Affected population One free range property with two separate sheds.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 43500 43500 1669 41831 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 100.00% 3.84% 3.84% 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
  • Contact with wild species
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
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Official destruction of animal products
  • Stamping out
  • Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
AgriBio (Local laboratory) Birds real-time PCR 29/07/2020 Positive
Australian Centre for Disease Preparedness (OIE Reference Laboratory) Birds gene sequencing 31/07/2020 Positive
Australian Centre for Disease Preparedness (OIE Reference Laboratory) Birds real-time PCR 30/07/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations