Hi, I think (and this is not gospel!), that you only need vaccinate for salmonella if you are planning on selling the eggs. The "EggMan" at the Egg Marketing Board would probably be able to shed more light on this! I do not vaccinate any of the laying birds that I hatch, however, they are hatched from laying stock that have been vaccinated! For your own consumption, I am reasonably sure that since it is your own risk, that there is no need to vaccinate. I am sure that somebody else will know more - keep watching! Catherine.