1 Ruth L. Berkelman is director of the Center for Public Health Preparedness and Research at the Rollins School of Public Health, Emory University, Atlanta, GA. rberkel@emory.edu.
2 James W. Le Duc is a professor in the Department of Microbiology and Immunology and director of the Galveston National Laboratory at the University of Texas Medical Branch, Galveston, TX. jwleduc@utmb.edu.