Five or six years ago northeast MO had a round of the disease. A MDC guy told me that it was centered in Pike Co. I think that I heard that it killed about 20% of the herd. I saw a doe back then during deer season drooling, I did not shoot her. On second thought, maybe I should have, she may have passed the disease on. That was in Ralls Co, next door to Pike. Since then the herd seems to have recovered, deer can come back from a 20% die-off fairly easily. Conditions for deer are probably tougher in the northern plains, they seem to be having a higher percentage die of the disease. When a deer has it, they want to drink water, maybe it is harder to find up there.