A chimeric viral particle that comprises a RV fusion gene is disclosed. The RV fusion gene comprises a first nucleotide sequence encoding a RV that is devoid of RV E1 protein, and a second nucleotide sequence that linked in translation frame to the first nucleotide sequence and encodes a humoral immunogenic viral protein. The chimeric viral particle is free of RV E1 protein-encoding gene. A virus packaging cell that generates the chimeric viral particle comprising a RV fusion gene and an isolated expression vector comprising a RV fusion gene linked in translation frame to a promoter are also disclosed.