The man who lived for two months with a pig's heart beating in his chest, the American David Bennett, received an unwanted stowaway in the transplant: a porcine cytomegalovirus, an animal virus that could have contributed to his death The 8th of March. Bennett, 57, was the first person—and so far the only one—who has lived thanks to a pig organ. The operation was presented as a success, with videos of the patient watching the final of the American football championship, but his condition began to deteriorate after a month and a half and he finally died from until now unknown causes.