Scientists constructed Salmonella mutants that were unable to move glucose into the immune cells they occupy and so were unable to use glucose as food. These mutant strains lost their ability to replicate harmless while still stimulating the host’s immune system.
Patents have been filed on the mutant strains which could be used to develop vaccines to protect people and animals against salmonella poisoning.
http://www.foodproductiondaily.com/Quality-Safety/Vaccination-could-stop-salmonella-food-poisoning