1. Harvard Medical School and Regional Emerging Special Pathogens Treatment Center, Infection Control Unit, and Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts (E.S.S., K.C.Z.)
2. Harvard Medical School and Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, and Division of Infection Prevention and Control, Beth Israel Lahey Health, Cambridge, Massachusetts (S.B.W.)
3. Harvard T. H. Chan School of Public Health and Employee Health Management, Beth Israel Deaconess Medical Center, Boston, and Occupational and Environmental Health Network, Marlborough, Massachusetts (D.N.B.)
4. Employee Health Department, Beth Israel Lahey Health, Burlington, Massachusetts (L.A.F.)
5. Division of Infection Prevention and Control, Beth Israel Lahey Health, Cambridge, Massachusetts (A.D.K.)
6. Division of Infection Control/Hospital Epidemiology, Silverman Institute for Health Care Quality and Safety, Beth Israel Deaconess Medical Center, Boston, Massachusetts (P.S.G.)
7. Harvard Medical School, Division of Infectious Diseases, Beth Israel Deaconess Medical Center, and Division of Infection Control/Hospital Epidemiology, Silverman Institute for Health Care Quality and Safety, Beth Israel Deaconess Medical Center, Boston, Massachusetts (P.M., D.E.P.)
8. Tufts University School of Medicine, Boston, and Division of Hospital Epidemiology and Infection Prevention and Division of Infectious Diseases, Lahey Hospital and Medical Center, Burlington, Massachusetts (D.A.C.)
9. Division of Hospital Epidemiology and Infection Prevention, Lahey Hospital and Medical Center, Burlington, Massachusetts (L.R.K., S.E.M.)
10. Infection Control Unit, Massachusetts General Hospital, Boston, Massachusetts (A.C.)
11. Regional Emerging Special Pathogens Treatment Center and Infection Control Unit, Massachusetts General Hospital, Boston, Massachusetts (M.F.)
12. Harvard Medical School, Infection Control Unit and Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts (D.C.H.)
13. Occupational Health Services, Mass General Brigham, Boston, Massachusetts (K.M.)
14. Regional Emerging Special Pathogens Treatment Center and Center for Disaster Medicine, Massachusetts General Hospital, Boston, Massachusetts (E.F.S.)
15. Center for Disaster Medicine, Massachusetts General Hospital, and Department of Emergency Preparedness and Business Continuity, Mass General Brigham, Boston, Massachusetts (J.A.S.)
16. Bureau of Infectious Disease and Laboratory Sciences, Massachusetts Department of Public Health, Boston, Massachusetts (L.B., M.C., B.H., J.J., E.M., M.O., C.P., J.S., S.S., E.T., C.M.B.)
17. Bureau of Infectious Disease and Laboratory Sciences, Massachusetts Department of Public Health, Boston, and Department of Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts (L.C.M.).