The present invention relates to the field of (vector) vaccines, and especially to novel promoter sequences, expression cassettes and vectors, which are suitable to express genes of interest, especially antigen encoding sequences. The viral vectors of the present invention are useful for producing an immunogenic composition or vaccine.本發明係關於(載體)疫苗領域,且尤其關於新穎之啟動子序列、表現卡匣及載體,其等適於表現所關注之基因,尤其抗原編碼序列。本發明之病毒載體可用於生產免疫原性組合物或疫苗。