601880 Disclosed is a vaccine comprising a first polynucleotide sequence encoding a TRAP polypeptide or an immunogenic fragment thereof, wherein the TRAP polypeptide is SEQ ID NO:3, or an immunogenic fragment of SEQ ID NO:3. Further disclosed is a vaccine comprising a variant of Salmonella enteritidis 13A comprising a first polynucleotide sequence encoding a TRAP polypeptide, wherein the TRAP polypeptide is SEQ ID NO:3 or an immunogenic fragment of SEQ ID NO:3.. Wherein SEQ ID NO:3 is: GGGFPTAAVAGGVGGVLLIAAVGGGVAAFTSGGGGAGAQE