The second nurse, Amber Vinson, took a commercial flight from Cleveland to Dallas while she was potentially contagious. Vinson, like Pham before her, was on the hospital's "self monitoring" program. Essentially, workers who provided care to the patient have been instructed to monitor themselves for symptoms, use their best judgment to decide when those symptoms are serious, and report themselves to the hospital. This is the process which the CDC and the press have been bragging took only 90 minutes in Pham's case. But that number is meaningless, as it is only how long it took from when she decided...