But back on track its still probably safer to eat venison than beef, so far there are no recoded cases of people being infected from zombie deer however there are plenty of people who have died from zombie cattle.
"Mad cow disease, for example, is a prion disease that rooted from scrapie, a deadly disease that afflicts sheep. Once the prions were passed to cows, the cows developed a prion disease of their own (mad cow disease). And when humans ate the beef from those sick cows, they developed prions in their own brains. As of 2016, according to the Food and Drug Administration, 231 people had died from the condition."