Apparently DNA of the bacteria Borrelia burgdorferi (the bacteria responsible for causing Borreliosis, or Lyme disease) was identified in the 2010 autopsy completed on the 5000+ year old Otzi the Iceman, making him the oldest suspected case of Lyme disease.
I’ve heard of people with incurable illnesses cryogenic freezing themselves until a cure could be found in the future, perhaps Otzi had a similar plan?
Janie's Place 