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1 From the National Institute of Allergy and Infectious Diseases, Bethesda (H.D.M., A.S.F.), and the Office of the Commissioner, Food and Drug Administration, Silver Spring (L.L.B) - both in Maryland; and the Office of the Assistant Secretary for Preparedness and Response, Department of Health and Human Services, Washington, DC (N.L.).
1 From the National Institute of Allergy and Infectious Diseases, Bethesda (H.D.M., A.S.F.), and the Office of the Commissioner, Food and Drug Administration, Silver Spring (L.L.B) - both in Maryland; and the Office of the Assistant Secretary for Preparedness and Response, Department of Health and Human Services, Washington, DC (N.L.).