When they get to a certain age are they safe? I'm not sure my chicks got vaccinated when I got them at quality supply in March. There so healthy, and active, but now I worry since I see others are dealing with this disease. If I ever get more chicks ,do I ask them to vaccinate before I take them? What about private owners, how do I know there safe and do they vaccinate? is it best to get eggs from people and hatch my self to be safe? Thank you for your help , I so appreciate it