On behalf of the U.S. Agency for International Development (USAID), I congratulate Dr. Robert Redfield on his new position as Director of the U.S. Centers for Disease Control and Prevention (CDC) within the U.S. Department of Health and Human Services (HHS). From fighting tuberculosis and malaria to preventing the spread of HIV and advancing global health security, our two institutions work together around the world to save lives. We look forward to continuing this important collaboration with Dr. Redfield and our HHS/CDC colleagues.