Hello everyone I have ten baby chicks that are two weeks old today I have purchased Newcastle/Infectious Bronchitis vaccine for and was planning on administering tonight. However, today a friend learned she is moving and gave me her two slightly less than 1 year old Americaunas that have not been vaccinated for this. I would like to vaccinate them as well as my chicks because having chickens that aren't vaccinated around others that are is generally a bad idea from what I read in the pamphlet that came with the medicine. Does anyone know if it's ok to vaccinate chickens that are already laying? And is there an egg withdrawal?