A 20-year-old Air Force recruit who died of rabies had symptoms of the disease but wasn't tested before his organs were transplanted to four patients, one of whom died of rabies nearly 18 months later, federal health officials said Friday.

The three other organ recipients are getting rabies shots and haven't displayed any symptoms.

Doctors at the Centers for Disease Control and Prevention declined to speculate on the recipients' chances for survival.

Dr. Matthew Kuehnert, director of the agency's Office of Blood, Organ, and Other Tissue Safety, said investigators don't know why doctors in Florida didn't test the donor for rabies before offering his kidneys, heart and liver to people in Florida, Georgia, Illinois and Maryland.

The man in Maryland who received the transplant died.

The Defense Department said he was an Army veteran who had transplant surgery at Walter Reed National Military Medical Center.