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00925njm 22002777a 4500 dc EFSA Panel on Animal Health and Welfare (AHAW) author Nielsen, Søren Saxmose author Alvarez, Julio author Bicout, Dominique author Calistri, Paolo author Canali, Elisabetta author Drewe, Julian Ashley author Garin-Bastuji, Bruno author Gonzales Rojas, José Louis author Gortazar Smith, Christian author Herskin, Mette author Michel, Virginie author Miranda Chueca, Miguel Angel author Padalino, Barbara author Spoolder, Hans author Ståhl, Karl author Velarde, Antonio author Viltrop, Arvo author Winckler, Christoph author Arzul, Isabelle author Dharmaveer, Shetty author Olesen, Niels Jørgen author Schiøtt, Morten author Sindre, Hilde author Stone, David author Vendramin, Niccoló author Aires, Mariana author Aznar Asensio, Inmaculada author Antoniou, Sotiria-Eleni author Barizzone, Fulvio author Dhollander, Sofie author Gnocchi, Marzia author Karagianni, Anna Eleonora author Kero, Linnea Lindgren author Munoz Guajardo, Irene Pilar author Rusina, Alessia author Roberts, Helen author 2023-08-01 Vector or reservoir species of five fish diseases listed in the Animal Health Law were identified, based on evidence generated through an extensive literature review (ELR), to support a possible updating of Regulation (EU) 2018/1882. Fish species on or in which highly polymorphic region-deleted infectious salmon anaemia virus (HPR∆ ISAV), Koi herpes virus (KHV), epizootic haematopoietic necrosis virus (EHNV), infectious haematopoietic necrosis virus (IHNV) or viral haemorrhagic septicaemia virus (VHSV) were detected, in the field or during experiments, were classified as reservoir species with different levels of certainty depending on the diagnostic tests used. Where experimental evidence indicated transmission of the pathogen from a studied species to another known susceptible species, the studied species was classified as a vector species. Although the quantification of the risk of spread of the pathogens by the vectors or reservoir species was not part of the terms or reference, such risks do exist for the vector species, since transmission from infected vector species to susceptible species was proven. Where evidence for transmission from infected fish was not found, these were defined as reservoirs. Nonetheless, the risk of the spread of the pathogens from infected reservoir species cannot be excluded. Evidence identifying conditions that may prevent transmission by vectors or reservoir fish species during transport was collected from scientific literature. For VHSV, IHNV or HPR∆ ISAV, it was concluded that under transport conditions at temperatures below 25°C, it is likely (66–90%) they will remain infective. Therefore, vector or reservoir species that may have been exposed to these pathogens in an affected area in the wild, aquaculture establishments or through water supply can possibly transmit VHSV, IHNV or HPR∆ ISAV into a non-affected area when transported at a temperature below 25°C. The conclusion was the same for EHN and KHV; however, they are likely to remain infective under all transport temperatures. Nielsen, Søren Saxmose, Julio Álvarez, Dominique Bicout, Paolo Calistri, Elisabetta Canali, Julian Ashley Drewe, Bruno Garin‐Bastuji, et al. “Species Which May Act as Vectors or Reservoirs of Diseases Covered by the Animal Health Law: Listed Pathogens of Fish.” EFSA Journal 21 (8). doi:10.2903/j.efsa.2023.8174. 1831-4732 http://hdl.handle.net/20.500.12327/2446 https://doi.org/10.2903/j.efsa.2023.8174 Species which may act as vectors or reservoirs of diseases covered by the Animal Health Law: Listed pathogens of fish