Not only are doctors, nurses, and firefighters essential during a severe pandemic influenza outbreak. So, too, are truck drivers, communications personnel, and utility workers. That's the conclusion of a Johns Hopkins University article to be published in the journal of Biosecurity and Bioterrorism. The report, led by Nancy Kass, Sc.D, Deputy Director of Public Health for the Johns Hopkins Berman Institute of Bioethics, provides ethical guidance for pandemic planning that ensures a skeletal infrastructure remain intact at all times. Dr.