About a year ago, my grandpa experienced wondrous symptoms. So he went to the hospital. The doctor wasn't sure what was wrong with him at first, so he had to stay for multiple days. After much discussing about possible causes, it turns out he'd eaten a piece of some random game that another family member brought along, and that he'd let thaw and then had refrozen it. That allowed the doctors to treat him successfully on, I believe, day 3.
After leaving the hospital, he still wasn't sure of the cause though — and you can't just throw away perfectly good meat!; so he ate another piece of the defrosted game and, no surprise, went to hospital again. This time around, the diagnosis was a lot easier though.