First confirmation of salmonid alphavirus infection in Arctic char Salvelinus alpinus and in Austria

Abstract

To date, sleeping disease (SD) caused by salmonid alphavirus 2 (SAV 2) has been reported in freshwater rainbow trout Oncorhynchus mykiss and Atlantic salmon Salmo salar. This study describes for the first time the occurrence of SD in farm-reared Arctic char Salvelinus alpinus and the occurrence of SAV in Austria. Clinical symptoms were indicative of the disease, and the diagnosis was confirmed by histopathology, infectivity in first passages of CHSE-214 cells and PCR. The phylogenetic analysis of the amplified SAV-nonstructural protein-3 (nsP3) fragment revealed the affiliation to the SAV 2 genotype.

Effect of vaccines against pancreas disease in farmed Atlantic salmon

“…The aetiological agent, formally named salmon pancreas disease virus (SPDV) and commonly denoted as salmonid alphavirus (SAV), partly because the virus also infects other salmonid species (Jansen et al, 2017;Lewisch et al, 2018;Villoing et al, 2000).…”

“…Since first described in 1976, pancreas disease (PD) has represented an economically important viral disease affecting seawater‐reared Atlantic salmon ( Salmo salar ) in Ireland, UK and Norway (Jansen et al., 2017 ; McLoughlin & Graham, 2007 ; Munro et al., 1984 ). The aetiological agent, formally named salmon pancreas disease virus (SPDV) and commonly denoted as salmonid alphavirus (SAV), partly because the virus also infects other salmonid species (Jansen et al., 2017 ; Lewisch et al., 2018 ; Villoing et al., 2000 ).…”