I have had chickens twice in my lifetime. I bought them from feedstore so I know the chicken had some vaccinations because they came from a large hatchery. My own when they hatch, I just enjoy the chicks. My son has an allergy to duck eggs and as I was researching the likelihood and probability of allergy vs intolerance, I noticed a salmonella vaccination recommendation. I figured a small flock of 8 chickens and 8 ducks (ducks free ranged and chickens sometimes free ranged)housed separately would need no additional vaccines. It seems that one can get salmonella from eggs even cooked ones? I always thought if eggs were properly cooked then salmonella was very unlikely. And of course hands cleaned properly after handling eggs. So do you vaccinate your flock for anything esp salmonella? Do you do any testing for such things to determine if vaccination should be needed?