

They took medication to treat the parasite and no longer had neurological complaints. Test results showed that both recipients were infected with Microsporidia. A third person, who received the donor's heart and her other kidney, had been hospitalized with a type of brain inflammation known as encephalitis. Indeed, the man's autopsy revealed his tissue tested positive for a tiny parasite known as Encephalitozoon cuniculi, which belongs to a group of single-celled organisms called Microsporidia.ĭoctors tracked down the person who received the donor's liver, and this individual had tremors and difficulty walking.

He later died, and his doctors wondered whether the transplanted organ might have been responsible. One man, who received a kidney, experienced behavior changes. Three people who received transplanted organs from the same donor developed brain problems shortly after the operations due to a rare parasitic infection that originated in the organ donor's body. (Image credit: Mayo Clinic, Rochester, MN)
