DAO 76:45-48 (2007)  -  doi:10.3354/dao076045

Use of a live vaccine to modulate Cryptobia salmositica infections in Salmo salar

Christina M. Davy1,2, Erika Crispo1,3, Patrick T. K. Woo1,*

1Department of Integrative Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
2Present address: Department of Biology, University of Western Ontario, 1151 Richmond St. N., London, Ontario N6A 5B7, Canada
3Present address: McGill University, Redpath Museum, 859 Sherbrooke St. W., Montréal, Québec H3A 2K6, Canada
*Corresponding author: Email:

ABSTRACT: The vaccine strain of Cryptobia salmositica multiplies in Atlantic salmon Salmo salar and it can modulate the severity of the disease in Cryptobia-infected individuals. Fish injected with the vaccine 3 d post-infection with C. salmositica had lower peak parasitaemias and higher antibody titres than infected fish given the vaccine 7 d post-infection or those infected fish that were not given the vaccine.


KEY WORDS: Cryptobia salmositica · Vaccine · Immune response · Atlantic salmon · Salmo salar


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