1. From the Departments of Medicine and Global Health, Center for Emerging and Re-Emerging Infectious Diseases, University of Washington School of Medicine, Seattle (G.S.G.); and the Departments of Medicine (J.M.R., R.T.G.) and Radiology (R.G.G.), Massachusetts General Hospital, and the Departments of Medicine (J.M.R., R.T.G.) and Radiology (R.G.G.), Harvard Medical School — both in Boston.