Today some 40,000 patients receive new organs each year worldwide.
It is hard to say how many Americans are receiving such organs each year.
Most likely, many of them received organs from executed prisoners.
The others receive organs that can mean the difference between life and death.
Today's news conference was attended by the other six patients who received organs from the same donor as Mantle.
As a result, the dispute over who should receive donated organs is intense.
She said about half the people on heart-transplant lists eventually received organs.
The Government is searching for nearly 50 patients who received tissue or organs from the donor.
Although this view is changing, the number who have received organs is still small.
Three other patients who received organs from the woman have not yet shown rabies symptoms.