Depends what you define as a CWD area. According to the CWD map in the Hunting Information handbook, it's pretty common over in my area of kansas(northeast). I've never been worried about any of the deer my buddies have taken or the one I took myself.
There's actually only been one case discovered in Kansas, and that was in the far north west corner of the state. So not much worry ( yet ) in our neck of the woods.
Here's a link to info on CWD in Kansas.
Living in a state that has CWD, we do take precautions. First we handle the game with surgical gloves. Then we have the elk or deer tested. We do not eat the meat until we receive the test results. If it should ever come back positive, we will not eat the meat.
From the books that I have read, there is a lot of importance in knowing every nook and cranny of your hunting territory as well as the animal that you are hunting. So scouting as much as possible, just walking the land, will give you a good idea of what's around the corner or what's on the other side of a hill. Which can be very beneficial.
Making your own maps of human and deer trails, and different types of foliage such as group of pines,...