I read that if chicken eggs will be eaten, the hens should be vaccinated for worms. Is this true? My pullets have been laying for a few months, and they seem fine, but I don't want their eggs to be eaten if they have something wrong with them. If you do have to vaccinate them, where do you get the vaccinations? And how do you vaccinate them (where, what to do, etc.)? Here are their weights: Poppy- 5 pounds Lily and Flutter- 4.5 pounds Gamma- 4 pounds They are all 7 and a half months old.