The link to my page with the vaccination info is here
http://www.silverpulletpoultry.net/howiraisechickens.htm
and its written into the BROODER section.
I do not keep them separated after being done but then again all my birds have been vaccinated.
Yes you can as long as the chicks are not exposed to older birds prior to vaccination. I brood in the house and vaccinate up to a month old, but the chicks have no contact with the older birds outside. Check out my website and I have a tutorial on how I do the Mareks vaccination. I use the same...