Information received on 18/02/2021 from Dr Hakan Henrikson, Chief Veterinary Officer, Swedish Board of Agriculture, Ministry of Enterprise and Innovation, J?nk?ping, Sweden
Summary
Report type
Follow-up report No. 12
Date of start of the event
06/11/2020
Date of confirmation of the event
26/11/2020
Report date
18/02/2021
Date submitted to OIE
18/02/2021
Reason for notification
Recurrence of a listed disease
Date of previous occurrence
06/05/2018
Manifestation of disease
Clinical disease
Causal agent
Highly pathogenic influenza A virus
Serotype
H5N8
Nature of diagnosis
Laboratory (advanced)
This event pertains to
a defined zone within the country
Related reports
Immediate notification (27/11/2020)
Follow-up report No. 1 (08/12/2020)
Follow-up report No. 2 (09/12/2020)
Follow-up report No. 3 (16/12/2020)
Follow-up report No. 4 (23/12/2020)
Follow-up report No. 5 (07/01/2021)
Follow-up report No. 6 (12/01/2021)
Follow-up report No. 7 (20/01/2021)
Follow-up report No. 8 (21/01/2021)
Follow-up report No. 9 (12/02/2021)
Follow-up report No. 10 (16/02/2021)
Follow-up report No. 11 (17/02/2021)
Follow-up report No. 12 (18/02/2021)
New outbreaks (1)

Outbreak 1
Skepplanda, Skepplanda, Ale, V?stra G?talands L?n
Date of start of the outbreak
16/02/2021
Outbreak status
Resolved (17/02/2021)
Epidemiological unit
Backyard
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
46
31
31
15
0
Affected population
A hobby flock of 39 chickens and 7 ducks kept in a backyard. Clinical signs of increased mortality was seen on 16 February. Remaning birds were euthanized 17 February.
Summary of outbreaks
Total outbreaks: 1
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
46
31
31
15
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Birds
67.39%
67.39%
100.00%
100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
Contact with wild species
Epidemiological comments
In accordance with the OIE Terrestrial Animal Health Code, Article 10.4.1, point 8, this event does not change the disease free status of Sweden as these are wild birds, and therefore do not fall within the OIE definition of poultry.

Control measures
Measures applied
Official destruction of animal products
Official disposal of carcasses, by-products and waste
Stamping out
Vaccination prohibited
No treatment of affected animals
Measures to be applied
No other measures
Diagnostic test results
Laboratory name and type
Species
Test
Test date
Result
National Veterinary Institute (National laboratory)
Birds
real-time PCR
17/02/2021
Positive
National Veterinary Institute (National laboratory)
Birds
virus sequencing
18/02/2021
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.