First evidence of infectious hematopoietic necrosis virus (IHNV) in the Netherlands

Abstract

Event Abstract Back to Event First evidence of infectious hematopoietic necrosis virus (IHNV) in the Netherlands Olga Haenen1*, Heike Schuetze2, Michael Cieslak2, Clazien De Vos3, Armin Elbers3, Suyin Oldenburg4, Marcel Spierenburg4, Ineke Roozenburg-Hengst1, Michal Voorbergen-Laarman1, Marc Engelsma1 and Niels Jørgen Olesen5 1 Central Veterinary Institute, part of Wageningen UR, Department of Bacteriology and Epidemiology, Netherlands 2 Friedrich-Loeffler-Institut, Bundesforschungs Institut für Tiergesundheit, Germany 3 Central Veterinary Institute, part of Wageningen UR, Department of Bacteriology and Epidemiology, Netherlands 4 Netherlands Food and Consumer Product Safety Authority (NVWA), Netherlands 5 DTU National Veterinary Institute, Section for Virology, Denmark In spring 2008, infectious hematopoietic necrosis virus (IHNV) was detected for the first time in the Netherlands. The virus was isolated from rainbow trout, Oncorhynchus mykiss (Walbaum), from a put-and-take fishery with angling ponds. IHNV is the causative agent of a serious fish disease, infectious hematopoietic necrosis (IHN). From 2008-2011, we diagnosed eight IHNV infections in rainbow trout originating from six put-and-take fisheries (symptomatic and asymptomatic fish), and four IHNV infections from three rainbow trout farms (of which two were co-infected by Infectious Pancreatic Necrosis Virus, IPNV), at water temperatures between 5 and 15°C. At least one Dutch farm (with both put-and-take fisheries and rainbow trout culture) delivered trout to four of these eight IHNV positive farms. Mortalities related to IHNV were mostly <40%, but increased to nearly 100% in case of IHNV and IPNV co-infection. Subsequent phylogenetic analysis revealed that these 12 isolates clustered into two different monophyletic groups within the European IHNV-genogroup E. One of these two groups indicates a virus-introduction event by a German trout import, whereas the second group indicates that IHNV was already (several years) in the Netherlands before its discovery in 2008. Since 2011 no further IHNV infections were detected in the Netherlands. In this poster, details on the first IHNV detections in 2008-2011 in the Netherlands are presented. Keywords: Infectious hematopoietic necrosis virus, rainbow trout, phylogenetic analysis, The netherlands, Virus introduction Conference: AquaEpi I - 2016, Oslo, Norway, 20 Sep - 22 Sep, 2016. Presentation Type: Poster Topic: Aquatic Animal Epidemiology Citation: Haenen O, Schuetze H, Cieslak M, De Vos C, Elbers A, Oldenburg S, Spierenburg M, Roozenburg-Hengst I, Voorbergen-Laarman M, Engelsma M and Olesen N (2016). First evidence of infectious hematopoietic necrosis virus (IHNV) in the Netherlands. Front. Vet. Sci. Conference Abstract: AquaEpi I - 2016. doi: 10.3389/conf.FVETS.2016.02.00020 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 25 May 2016; Published Online: 14 Sep 2016. * Correspondence: Dr. Olga Haenen, Central Veterinary Institute, part of Wageningen UR, Department of Bacteriology and Epidemiology, Lelystad, Netherlands, olga.haenen@wur.nl Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Olga Haenen Heike Schuetze Michael Cieslak Clazien De Vos Armin Elbers Suyin Oldenburg Marcel Spierenburg Ineke Roozenburg-Hengst Michal Voorbergen-Laarman Marc Engelsma Niels Jørgen Olesen Google Olga Haenen Heike Schuetze Michael Cieslak Clazien De Vos Armin Elbers Suyin Oldenburg Marcel Spierenburg Ineke Roozenburg-Hengst Michal Voorbergen-Laarman Marc Engelsma Niels Jørgen Olesen Google Scholar Olga Haenen Heike Schuetze Michael Cieslak Clazien De Vos Armin Elbers Suyin Oldenburg Marcel Spierenburg Ineke Roozenburg-Hengst Michal Voorbergen-Laarman Marc Engelsma Niels Jørgen Olesen PubMed Olga Haenen Heike Schuetze Michael Cieslak Clazien De Vos Armin Elbers Suyin Oldenburg Marcel Spierenburg Ineke Roozenburg-Hengst Michal Voorbergen-Laarman Marc Engelsma Niels Jørgen Olesen Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. 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