期刊
VETERINARY JOURNAL
卷 161, 期 2, 页码 174-185出版社
BAILLIERE TINDALL
DOI: 10.1053/tvjl.2000.0546
关键词
equine; influenza; vaccination; subunit vaccines; multivalent vaccines
The purpose of these studies was to examine the response of Thoroughbred foals and yearlings to different influenza vaccines and vaccination regimes. The horses' antibody levels against haemagglutinin, an established correlate of protection were measured by haemagglutination inhibition. The first study investigated the extent to which maternal antibodies interfered with the humoral response to a subunit vaccine. The findings suggest that repeat vaccination in the face of maternal antibodies may induce tolerance as defined by serological testing. The second study compared the immune response elicited by a subunit immune stimulating complex (ISCOM) vaccine, an inactivated whole virus vaccine and the same product containing equine herpesviruses and equine reoviruses in addition to equine influenza virus. The monovalent vaccine induced a significantly better response than the ISCOM or the multivalent vaccine. The final study demonstrated that the inclusion of an additional booster vaccination, between the second and third vaccination recommended by the vaccine manufacturers and required under the rules of racing in certain countries, is of benefit to young horses. Since these studies were performed, several of the vaccines have been updated with more recent virus strains in line with WHO/OIE recommendations. However, the general principles (C) 2001 Harcourt Publishers Ltd.
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