A candidate phocid herpesvirus vaccine that provides protection against feline herpesvirus infection. |
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Authors: | B E Martina M I Airikkala T C Harder G van Amerongen A D Osterhaus |
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Institution: | Seal Rehabilitation and Research Centre, Pieterburen, 9968 AG Pieterburen, The Netherlands. |
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Abstract: | Phocid herpesvirus type 1 (PhHV-1) causes significant morbidity and mortality among young and immunocompromised harbour seals. Therefore, the availability of an effective PhHV-1 vaccine would be of importance for orphanages and seal rehabilitation centres. Since possibilities to test PhHV-1 candidate vaccines in the target species are limited, a suitable animal model is needed. Given the close genetic and antigenic relationships between PhHV-1 and feline herpesvirus (FHV), the FHV cat system could be considered to test candidate PhHV-1 vaccines. Here we have tested a PhHV-1 based ISCOM vaccine for its protective efficacy against FHV infection in cats. To this end, three groups of cats were vaccinated thrice with ISCOM adjuvanted PhHV-1, FHV, and mock vaccines, respectively. One month after the last vaccination, all cats were challenged with a virulent FHV strain. All PhHV-1 and FHV vaccinated cats were protected from developing severe disease and excreted significantly less FHV than the mock vaccinated cats. |
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