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Protection against vibriosis and furunculosis by the use of attenuated strains of Vibrio anguillarum.
Department of Microbiology, University of Umeå.
1989 (English)In: Applied and Environmental Microbiology, ISSN 0099-2240, E-ISSN 1098-5336, Vol. 55, no 6, p. 1400-1405Article in journal (Refereed) Published
Abstract [en]

The fish pathogen Vibrio anguillarum causes a lethal infectionin rainbow trout (Salmo gairdneri). Three different avirulentmutants, constructed by transposon insertion mutagenesis (VAN20and VAN70) or as antibiotic-resistant mutants (VAN1000), wereisolated by screening 200 individual isolated mutants for avirulence.When used as live vaccines, all three avirulent mutants wereable to induce protective immunity against the homologous aswell as a heterologous strain of V. anguillarum. When VAN1000was used, protective immunity could be recorded 1 week afterbath vaccination with 10(7) bacteria per ml of water for 30min. A single-dose immunization was effective for at least 12weeks. Western immunoblotting showed that strains of V. anguillarumhave antigenic determinants in common with Aeromonas strains.Therefore, we tested and confirmed that VAN1000 also was ableto induce protective immunity against challenge with Aeromonassalmonicida. 

Place, publisher, year, edition, pages
1989. Vol. 55, no 6, p. 1400-1405
National Category
Microbiology
Research subject
Natural Science, Microbiology
Identifiers
URN: urn:nbn:se:lnu:diva-513OAI: oai:DiVA.org:lnu-513DiVA, id: diva2:307243
Available from: 2010-04-01 Created: 2010-04-01 Last updated: 2017-12-12Bibliographically approved

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Hagström, Åke

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