Daniel W. Fitzgerald, Johanne Preval, Lauren Schulwolf, Vidya Bommi, and Pascal Chaillet are with Hospital Albert Schweitzer, Deschapelles, Haiti. Dr Fitzgerald is also with the Division of International Medicine and Infectious Diseases, Cornell University Medical College, New York, NY. Frieda Behets is with the Department of Medicine and the Department of Epidemiology, School of Public Health, University of North Carolina at Chapel Hill.