Exactly. It doesn't have to be a death sentance. It does require more diligence though on your part as well. Like if you are going to a swap or show, go in clean clothes and shoes you did not wear into your birds coops/runs.
Just so you know, I do not advocate culling or advocate treatment only. I do however think you do whats best for your situation and being responsible. Like when you are having a break out, don't go into the feed stores with clothing/shoes you wear/wore into your chicken yard. If you cull birds, dispose of them by incineration (SP?) or deep burial. In the mean time, keep a closed flock... By that you can bring birds in, but don't let birds go out. If you do let birds go out, be sure it is to someone who is familiar with all the ramifications of possibly getting a carrier bird.
If you incubate, try farmerboys dipping method on the eggs. Not all CRD viruses go through the egg, but dipping is good. AND some birds are more resistant to it, build a natural immunity, and those offspring are more likely to be stronger as well. Vaccinating new hatched chicks is also a good thing if it is in your budget to do.