Journal article
Field testing of a vaccine against eel diseases caused by Vibrio vulnificus
Departamento de Microbiología y Ecología, Facultad de Biologia, Universidad de Valencia, Burjassot, Spain.1
The field results of a vaccination programme against Vibrio vulnificus serovar E (biotype 2) in a Spanish eel farm are reported. A total of 9.5 million glass eels were vaccinated from January 1998 to March 2000 by prolonged immersion followed by 2 subsequent reimmunisations after 12 to 14 and 24 to 28 d, respectively.
The acquired protection and the immune response against serovar E were estimated over a period of 6 mo after vaccination. A similar vaccination schedule was conducted with elvers in a Danish eel farm. In this case, the acquired protection and the immune response against serovar E and the new eel-pathogenic serovars, recently described in Denmark, were evaluated over a short term.
The overall results show that the vaccine against V. vulnificus serovar E induces a satisfactory protective immunity during the main growth period of eels (around 6 mo) with a relative percentage survival of 62 to 86% and protects them against the new eel-pathogenic serovars. Vaccination of eels by immersion seems to be the best strategy to prevent diseases caused by V. vulnificus.
Language: | English |
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Year: | 2001 |
Pages: | 183-189 |
ISSN: | 16161580 and 01775103 |
Types: | Journal article |
DOI: | 10.3354/dao045183 |