RT Journal Article
T1 Viral haemorrhagic septicaemia virus, infectious haematopoietic necrosis virus and HPR‐deleted infectious salmon anaemia virus – Risk of introduction in free areas through fertilised eggs and gametes
A1 Nielsen, Søren Saxmose
A1 Álvarez Sánchez, Julio
A1 Boklund, Anette
A1 Dippel, Sabine
A1 Figuerola, Jordi
A1 Herskin, Mette S.
A1 Michel, Virginie
A1 Miranda Chueca, Miguel Angel
A1 Nannoni, Eleonora
A1 Nonno, Romolo
A1 Riber, Anja B.
A1 Ståhl, Karl
A1 Stegeman, Jan Arend
A1 Thulke, Hans‐Hermann
A1 Tuyttens, Frank
A1 Winckler, Christoph
A1 Christiansen, Debes Hammershaimb
A1 Olesen, Niels Jørgen
A1 Rimstad, Espen
A1 Toffan, Anna
A1 Vendramin, Niccolò
A1 Papaleo, Stella
A1 Preite, Ludovica
A1 Baldinelli, Francesca
A1 Dórea, Fernanda
AB EFSA assessed the risk of introducing viral haemorrhagic septicaemia virus (VHSV), infectious haematopoietic necrosis virus (IHNV) and highly polymorphic region-deleted infectious salmon anaemia virus (HPR-deleted ISAV) into free areas through movement of fertilised eggs and gametes. No evidence of true vertical transmission of these viruses was found. However, viral contamination of the surface of fertilised eggs and gametes cannot be ruled out. Assuming full compliance with the recommendations in the new draft 4.Z chapter of the Aquatic Animal Health Code of the World Organisation for Animal Health, including individual testing of broodfish at stripping, the median probability of introduction following importation of fertilised eggs was 0.36% for VHSV and IHNV, and 0.4% for HPR-deleted ISAV. The median probabilities were reduced to 0.02% and 0.01%, respectively, if fertilised eggs were disinfected twice (as green and as eyed eggs) at origin. Additional disinfection upon arrival in the importing establishment reduced the median probability to 0.02% for all viruses with one disinfection at the origin, and to virtually zero when two disinfections were applied at the origin. The assessment also evaluated probability of introduction when only population testing before stripping is applied. Two disinfections at the origin plus one at destination also resulted in virtually zero probability of introduction. For gametes, individual testing of broodfish at stripping, along with the other risk mitigation measures recommended in the new chapter resulted in a probability of introduction ranging from 0% to 0.3%. Implementation of the measures included in the new draft 4.Z chapter is recommended to prevent the introduction of VHSV, IHNV and HPR-deleted ISAV when moving gametes and fertilised eggs from non-free to free areas. In addition, it is recommended that fertilised eggs are disinfected twice before being traded and, to further reduce the risk, also disinfected at the establishment receiving the imported materials.
PB Wiley
SN 1831-4732
YR 2025
FD 2025
LK https://hdl.handle.net/20.500.14352/130490
UL https://hdl.handle.net/20.500.14352/130490
LA eng
NO EFSA AHAW Panel (EFSA Panel on Animal Health and Welfare), Nielsen, S. S., Alvarez, J., Boklund, A., Dippel, S., Figuerola, J., Herskin, M. S., Michel, V., Miranda Chueca, M. A., Nannoni, E., Nonno, R., Riber, A. B., Ståhl, K., Stegeman, J. A., Thulke, H.-H., Tuyttens, F., Winckler, C., Christiansen, D. H., Olesen, N. J., … Dórea, F. (2025). Viral haemorrhagic septicaemia virus, infectious haematopoietic necrosis virus and HPR-deleted infectious salmon anaemia virus – Risk of introduction in free areas through fertilised eggs and gametes. EFSA Journal, 23(12), e9800. https://doi.org/10.2903/j.efsa.2025.9800
DS Docta Complutense
RD 7 abr 2026