Information received on 23/12/2020 from Dr Martin Blake, Chief Veterinary Officer, Department of Agriculture, Food and the Marine, Agriculture House, Dublin, Ireland
Summary
Report type
Follow-up report No. 4
Date of start of the event
29/10/2020
Date of confirmation of the event
10/11/2020
Report date
23/12/2020
Date submitted to OIE
23/12/2020
Reason for notification
Recurrence of a listed disease
Date of previous occurrence
06/03/2018
Manifestation of disease
Clinical disease
Causal agent
Highly pathogenic influenza A virus
Serotype
H5N8
Nature of diagnosis
Laboratory (advanced)
This event pertains to
the whole country
Related reports
Immediate notification (10/11/2020)
Follow-up report No. 1 (10/12/2020)
Follow-up report No. 2 (12/12/2020)
Follow-up report No. 3 (13/12/2020)
Follow-up report No. 4 (23/12/2020)
New outbreaks (4)

Outbreak 1
Kilcoole Beach, Co. Wicklow, Wicklow
Date of start of the outbreak
15/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Not applicable
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Whooper Swan:Cygnus cygnus(Anatidae)

1
1
0
0
Affected population
On December 15th 2020, a whooper swan (Cygnus Cygnus) was found sick on a beach on the east coast of the country and died a short time later. It was submitted to the Regional Veterinary Laboratory for avian influenza testing.
Outbreak 2
Ballyderown, Kilworth, Co. Cork, Cork
Date of start of the outbreak
15/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Not applicable
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Whooper Swan:Cygnus cygnus(Anatidae)

1
1
0
0
Affected population
On December 15th 2020, a whooper swan (Cygnus Cygnus)was found dead in an area near a river. It was submitted to the Regional Veterinary Laboratory for avian influenza testing.
Outbreak 3
Ballybay Wetlands, Monaghan
Date of start of the outbreak
16/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Not applicable
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Phalacrocoracidae (unidentified):Phalacrocoracidae (incognita)(Phalacrocoracidae)

1
1
0
0
Affected population
On December 16th 2020, a cormorant and a mute swan were found dead in an area known to be frequented by migratory birds.
Outbreak 4
Ballyderown, Kilworth, Co. Cork, Cork
Date of start of the outbreak
16/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Not applicable
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Whooper Swan:Cygnus cygnus(Anatidae)

2
2
0
0
Affected population
On December 16th, 2020, two whooper swans (Cygnus Cygnus) were found dead in an area near a river. They were both submitted to the regional Veterinary Laboratory for avian influenza testing
Summary of outbreaks
Total outbreaks: 4
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Whooper Swan:Cygnus cygnus(Anatidae)

4
4
0
0
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Phalacrocoracidae (unidentified):Phalacrocoracidae (incognita)(Phalacrocoracidae)

1
1
0
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Whooper Swan:Cygnus cygnus(Anatidae)
**
**
100.00%
**
Mute Swan:Cygnus olor(Anatidae)
**
**
100.00%
**
Phalacrocoracidae (unidentified):Phalacrocoracidae (incognita)(Phalacrocoracidae)
**
**
100.00%
**
*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

Control measures
Measures applied
Vaccination permitted (if a vaccine exists)
No treatment of affected animals
Measures to be applied
No other measures

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