Nov 20, 2012 4:39 AM by AP/CS
Robin Roberts had to go back in the hospital for a week when a virus wouldn't respond to medication. Roberts writes on the "Good Morning America" Facebook page that her immune system ordinarily would've fought off the virus, but it's "only 59 days old." That's when she got the bone marrow transplant to treat a rare blood disorder. Her sister donated the marrow. She interviewed Roberts before she was released from the hospital. That interview is airing today on GMA.