1 The American Red Cross, Biomedical Services, Washington, DC, USA.
2 Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, USA.
3 Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
4 Baylor College of Medicine, Houston, Texas, USA.
5 Department of Medicine, Uniformed Services University, Bethesda, Maryland, USA.
6 Blood Assurance, Chattanooga, Tennessee, USA.
7 Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA.
8 Division of Chemical, Biological, Radiological and Nuclear Countermeasures, Biomedical Advanced Research and Development Authority, Administration for Strategic Preparedness and Response, US Department of Health and Human Services, Washington, DC, USA.
9 Yale University School of Medicine, New Haven, Connecticut, USA.
10 National Weather Service, Boston, Massachusetts, USA.
11 Canadian Blood Services, Vancouver, British Columbia, Canada.
12 Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.