The 2021 TriNation meeting was held as a virtual meeting, hosted by the FHF. Below you’ll find the program for the meeting and links to the presentations. (Presentations marked with * in the program cannot be published due to sensitive information).

Situation updates:

• Scotland by Eann Munro, Marine Scotland
• Norway by Hilde Sindre, Norwegian Veterinary Institute
• Ireland by Susie Mitchell, Fish Vet Group

Epidemiology and disease management:

• How our knowledge of alphavirus infection (PD) in farmed salmon can inform the management of Covid 19 in humans? by Marian McLoughlin, Fish health & production Veterinary consultant
• Epidemiology and pathogenesis of Piscine orthoreovirus genotype 3 by Juliane Sørensen, Technical University of Denmark
• Sequence variation in the full genome of PMCV sampled from field outbreaks of CMS by Aase B. Mikalsen, NMBU -Faculty of Veterinary Sciences

Host-pathogen interaction:

• PRV-3, but not PRV-2, cross-protects against PRV-1 and HSMI in Atlantic salmon by Maria Dahle, Norwegian Veterinary Institute
• Experimental challenge trial in Atlantic salmon with PMCV – insights in pathogenesis of CMS by Niccolò Vendramin, Technical University of Denmark*
• PRV-1 isolates differ in virulence by Øystein Wessel, NMBU – Faculty of Veterinary Sciences

Development in diagnostics and support

• A field evaluation of diagnostic tests for SAV and PD by Mona Dverdal Jansen, Norwegian Veterinary Institute
• Field study on the assessment of a method for detection of SAV in seawater at Norwegian Atlantic salmon farms by Lisa-Victoria Bernhardt, Norwegian Veterinary Institute
• Identification of serum proteins from Atlantic salmon with CMS by Janina Costa, Moredun Research Institute
• Assessing the use of cardiac biomarkers as a health management tool for early diagnostic of CMS in Atlantic salmon by Jorge del-Pozo, University of Edinburgh
• Remote customer support project by Claudia Marin, MSD animal health

Vaccine development

• Efficacy of licensed PD vaccines administered to commercially reared Atlantic salmon naturally infected with SAV2 and SAV3 in sea cages by Magnus Røsæg, Salmar
• Cellular immune responses in rainbow trout following vaccination and challenge against SAV by Kimberly Veenstra, Friedrich Loeffler Institut
• Effect of vaccines against CMS by Marius Karlsen, PHARMAQ*

Vaccine evaluation

• Effect and side-effects from PD vaccines by Espen Brudal, PHARMAQ*
• Effect of DNA and oil-adjuvanted vaccines for PD on spinal pathology, growth and economic impact of commercially reared salmon by Ragnar Thorarinsson, Elanco Animal Health
• Duration of immunity in Atlantic salmon parr vaccinated with CLYNAV using a saltwater SAV3 cohabitation challenge model by Ana Silva, Elanco Animal Health