Information received on 11/12/2020 from Mr Hans Wyss, Chief Veterinary Officer, Schwarzenburgstrasse 161, Swiss Federal Veterinary Office, LIEBEFELD BERNE, Switzerland
Report type Follow-up report No. 3
Date of start of the event 07/01/2020
Date of confirmation of the event 08/01/2020
Report date 11/12/2020
Date submitted to OIE 11/12/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 13/12/2019
Manifestation of disease Sub-clinical infection
Causal agent Bluetongue virus
Serotype 8
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (10/01/2020)
Follow-up report No. 1 (24/03/2020)
Follow-up report No. 2 (30/10/2020)
Follow-up report No. 3 (11/12/2020)
New outbreaks (1)
Outbreak 1 (BT_2020_AG_1) Sarmenstorf, Sarmenstorf, Bremgarten, Aargau
Date of start of the outbreak 13/11/2020
Outbreak status Resolved (13/11/2020)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 25 1 0 0 1
Affected population No clinical signs. Animal was detected due to the national surveillance program. Sampling took place in a slaughterhouse.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 25 1 0 0 1
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Cattle 4.00% 0.00% 0.00% 4.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Vectors
Control measures
Measures applied
  • Movement control inside the country
  • Zoning
  • Control of vectors
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Institute of Virology and Immunology (IVI) (National laboratory) Cattle reverse transcription - polymerase chain reaction (RT-PCR) 13/11/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations