Patrick L. F. Zuber, M.D., M.P.H., has been leading the Global Vaccine Safety Group at the World Health Organization since September 2007. Dr. Zuber is an international expert on vaccines programs in developing countries. He is a graduate of Lausanne (Switzerland) University and Harvard School of Public Health. Before joining the Global Vaccine Safety Group, he worked for many years at the United States Centers for Disease Control and Prevention (CDC). In his last two positions he led the Poliomyelitis Eradication Country Support at CDC and then led the New and Under-utilized Vaccines Introduction seconded to WHO. In his current work, his main focus is about developing global collaborative mechanisms in order to build and sustain capacity for vaccine pharmacovigilance in low- and middle-income countries. Through his role at the WHO, Dr. Zuber serves as the executive secretary to the Global Advisory Committee on Vaccine Safety.