Dual-promoter recombinant vector expressing immunogenic protein of african swine fever virus (asfv), recombinant bacterium, and use thereof

A dual-promoter recombinant vector expressing an immunogenic protein of an African swine fever virus (ASFV), comprising an original vector and a recombinant gene;

• wherein the original vector comprises a pNZ8149 vector;
• the recombinant gene comprises a PpepN promoter, a coding sequence of a Usp45 secretion signal peptide, and a coding sequence of the immunogenic protein of the ASFV, wherein the PpepN promoter, the coding sequence of the Usp45 secretion signal peptide, and the coding sequence of the immunogenic protein of the ASFV are ligated in sequence;
• and the PpepN promoter comprises the nucleotide sequence set forth in SEQ ID NO:
• 1 or a complementary sequence of the nucleotide sequence set forth in SEQ ID NO:
• 1;
• and
• the recombinant gene is located downstream of a promoter in the original vector.