Information received on 31/12/2019 from Dre Kristina Landsverk, Chief Veterinary Officer, Norwegian Food Safety Authority, Norwegian Food Safety Authority, Brumunddal, Norway
Report type Follow-up report No. 4
Date of start of the event 20/06/2019
Date of confirmation of the event 10/07/2019
Report date 31/12/2019
Date submitted to OIE 31/12/2019
Reason for notification Recurrence of a listed disease
Date of previous occurrence 2009
Manifestation of disease Sub-clinical infection
Causal agent Maedi-visna virus
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (11/07/2019)
Follow-up report No. 1 (06/09/2019)
Follow-up report No. 2 (30/10/2019)
Follow-up report No. 3 (29/11/2019)
Follow-up report No. 4 (31/12/2019)
Follow-up report No. 5 (31/01/2020)
Follow-up report No. 6 (29/02/2020)
Follow-up report No. 7 (08/04/2020)
Outbreaks There are no new outbreaks in this report
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance within containment and/or protection zone
  • Traceability
  • Quarantine
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Selective killing and disposal
  • Slaughter
  • Ante and post-mortem inspections
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.