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The Salmon Ledger
NOEN
Disease case · Infectious salmon anaemia (ISA)

ISA at Tennøya

Site 12449 · Frøya municipality · Trøndelag · Mowi Seawater Norway AS. Production area: Nordmøre og Sør-Trøndelag.

  1. Suspected12 Jul 2024Food Safety Authority
  2. Confirmednot yet
  3. Closed14 Dec 2024Farm emptied and fallowed
Follow the farmAbout the wellboat analysis
  • 155Days from suspicion to closureFood Safety Authority
  • 0Wellboat visits up to 28 days before, from 0 vesselsCoastal Administration (AIS) · 01 Oct 2026
  • 0Of them from a boat recently at a farm with an ISA/PD outbreakPlus 0 from a protection zone · within 14 days before the visit · The Salmon Ledger
  • 3Other farms with active ISA within 10 km at suspicionNorwegian Food Safety Authority · 01 Oct 2026

Wellboat visits before suspicion

The 28 days before the case started (suspected 12 Jul 2024). Each mark is one visit. A filled triangle means the boat had, in the previous 14 days, been at another farm with an active ISA or PD outbreak. An open triangle means it had only been at farms in a protection zone, with no outbreak there. Visits after suspicion are not included.

VisitCame from a farm with an ISA/PD outbreakCame from a farm in a protection zonePrevious farm unknown (no recorded stop in 14 days)

The Food Safety Authority's disease register starts on 26 Nov 2024. For visits before then, "came from a farm with an outbreak" and "came from a farm in a protection zone" may be missing, because older cases are only included if they were still open then.

Sources: Coastal Administration (AIS), Food Safety Authority (cases, and zones via BarentsWatch) · visits derived by The Salmon Ledger · updated 01 Oct 2026

Visits in the 28 days before suspicion

No recorded wellboat visits in the period.