Abstract: There is provided a fusion protein or a polynucleotide sequence encoding said fusion protein that comprises first and second domains, wherein the first domain of the fusion protein comprises an amino acid sequence having at least 70% sequence identity to the amino acid sequence of SEQ ID NO: 1, or a fragment thereof comprising at least 20 consecutive amino acids thereof; and wherein the second domain of the fusion protein comprises a mycobacterial antigen or an antigenic fragment thereof. Also provided are corresponding therapeutic uses thereof for the protection of primates against mycobacterial infections.