Figure 1.

Organizational chart for U.S. governmental agencies directing and supporting countermeasure development. Solid lines indicate agency relationships under the Department of Health and Human Services; dotted lines indicate partnerships. ASPR = Office of the Assistant Secretary for Preparedness and Response; BARDA = Biomedical Advanced Research and Development Authority; CDC = Centers for Disease Control and Prevention; CounterACT = Countermeasures Against Chemical Threats; DHS = Department of Homeland Security; DoD = Department of Defense; FDA = Food and Drug Administration; HHS = Department of Health and Human Services; NIH = National Institutes of Health; PHEMC = Public Health Emergency Medical Countermeasures Enterprise.