Authors’ addresses: Paul Albert Trubin, Department of Internal Medicine, Section of Infectious Diseases, Yale University School of Medicine, New Haven, CT, E-mail: paul.trubin@yale.edu. Sacit Bulent Omay, Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, E-mail: sacit.omay@yale.edu. Albert I. Ko, Department of Internal Medicine, Section of Infectious Diseases, Yale University School of Medicine, New Haven, CT, and Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut, E-mail: albert.ko@yale.edu.