The hospital has subsequently altered its story. The doctors knew about the patient's travel, and didn't act:

"Friday evening, the hospital effectively retracted that portion of its statement, saying that “there was no flaw” in its electronic health records system. The hospital said “the patient’s travel history was documented and available to the full care team in the electronic health record (E.H.R.), including within the physician’s workflow."

http://www.nytimes.com/2014/10/04/us/containing-ebola-cdc-tr...