There is an update on an experimental cancer treatment that is making medical history at the Mayo Clinic.
In May, Stacy Erholtz was given a highly concentrated dose of the measles virus, which put her cancer into remission.
The dose was enough to vaccinate 10-million people.
"I am filled with joy. I really am. It is interesting because I would say the cancer has made my faith much stronger. I wouldn't give it back," says Erholtz.
The Mayo Clinic is opening its phase two trial of the measles study, with 15 doses available this time, and more than 350 people on the waiting list.
Meanwhile, Stacy will be tested regularly for the rest of her life, to make sure her multiple myeloma, a blood cancer, doesn't return.