Abstract
A DNA vaccine against a fish rhabdovirus, infectious hematopoietic necrosis virus (IHNV), was shown to provide significant protection as soon as 4 d after intramuscular vaccination in 2 g rainbow trout (Oncorhynchus mykiss) held at 15 degreesC. Nearly complete protection was also observed at later time points (7, 14, and 28 d) using a standardized waterborne challenge model. In a test of the specificity of this early protection, immunization of rainbow trout with a DNA vaccine against another fish rhabdovirus, viral hemorrhagic septicemia virus, provided a significant level of cross-protection against IHNV challenge for a transient period of time, whereas a rabies virus DNA vaccine was not protective. This indication of distinct early and late protective mechanisms was not dependent on DNA vaccine doses from 0.1 to 2.5 mug.
Original language | English |
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Journal | Vaccine |
Volume | 19 |
Issue number | 28-29 |
Pages (from-to) | 4011-4019 |
ISSN | 0264-410X |
DOIs | |
Publication status | Published - 2001 |
Keywords
- DNA vaccine kinetics
- fish DNA vaccine specificity
- viral hemorrhagic septicemia virus (VHSV)
- infectious hematopoietic necrosis virus (IHNV)