OIE: Highly pathogenic avian influenza(H7N7), Australia

OIE: Highly pathogenic avian influenza(H7N7), Australia
submited by kickingbird at Aug, 28, 2020 0:35 AM from OIE

Summary

Report type	Follow-up report No. 4
Date of start of the event	24/07/2020
Date of confirmation of the event	31/07/2020
Report date	25/08/2020
Date submitted to OIE	25/08/2020
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)

New outbreaks (1)

Outbreak 1

Lethbridge, Victoria

Date of start of the outbreak

23/08/2020

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	36878		15		0

Affected population

commercial free-range layer farm inside the Lethbridge restricted area

Summary of outbreaks

Total outbreaks: 1

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	36878	**	15		0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	**	0.04%	**	**

*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

Depopulation and burial on the first affected property is complete. Disinfection is in progress. Depopulation of the second affected property is complete. Off-site disposal is continuing. A third property with no livestock - a composting site with known high risk trace to the second infected property - has confirmed molecular evidence of H7 influenza A and is also under quarantine. A fourth property located within the restricted area was confirmed on 25 August. Depopulation has commenced. Surveillance both within and outside the restricted area is ongoing.

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 Stamping out Vaccination prohibited No treatment of affected animals
Measures to be applied	Disinfection

Future Reporting

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

See Also:

https://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=35534

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