1 Huntsville Regional Medical Campus, University of Alabama Birmingham School of Medicine, Birmingham, Alabama (R.M.C.).
2 Department of Global Health, Boston University School of Public Health, Section of Infectious Diseases, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Center for Emerging Infectious Disease Policy and Research, Boston University, and National Emerging Infectious Disease Laboratory, Boston, Massachusetts (D.H.H.).
3 Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy (R.H.).