The present invention relates to Salmonella entehcacomprising at least one pgl operon of Campylobacter jejuni or a functionalderivative thereof and presenting at least one N- glycan of Campylobacterjejuni or N-glycan derivative thereof on its cell surface. In addition, it isdirected to medical uses and pharmaceutical compositions thereof as wellas methods for treating and/or preventing Campylobacter and optionallySalmonella infections and methods for producing these Salmonellastrains.