Development of inactivated Akabane and bovine ephemeral fever vaccine for cattle
2015
Yang, D.K., Viral disease division, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Kim, H.H., Viral disease division, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Jo, H.Y., Viral disease division, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Choi, S.S., Viral disease division, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Cho, I.S., Viral disease division, Animal and Plant Quarantine Agency, Anyang, Republic of Korea
Akabane and bovine ephemeral fever (BEF) viruses cause vector - borne diseases. In this study, inactivated Akabane virus (AKAV)+Bovine ephemeral fever virus (BEFV) vaccines with or without recombinant vibrio flagellin (revibFlaB) protein were expressed in a baculovirus expression system to measure their safety and immunogenicity. Blood was collected from mice, guinea pigs, sows, and cattle that had been inoculated with the vaccine twice. Inactivated AKAV+BEFV vaccine induced high virus neutralizing antibody (VNA) titer against AKAV and BEFV in mice and guinea pigs. VNA titers against AKAV were higher in mice and guinea pigs immunized with the inactivated AKAV+ BEFV vaccine than in animals inoculated with vaccine containing revibFlaB protein. Inactivated AKAV+BEFV vaccine elicited slightly higher VNA titers against AKAV and BEFV than the live AKAV and live BEFV vaccines in mice and guinea pigs. In addition, the inactivated AKAV+BEFV vaccine was safe, and induced high VNA titers, ranging from 1 : 64 to 1 : 512, against both AKAV and BEFV in sows and cattle. Moreover, there were no side effects observed in any treated animals. These results indicate that the inactivated AKAV+BEFV vaccine could be used in cattle with high immunogenicity and good safety.
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