How common is it?

CWD has unfortunately become more prevalent in recent years. In Wisconsin, CWD infects about 25-30 percent of the deer in its core management zone. In other areas, percentages of infected animals range from 0-30 percent in deer and wild elk. The number of animals diagnosed with CWD has steadily increased in recent years. It has also been found in numerous new locations where the disease was not previously detected.