This book gathers a series of pivotal papers on the development of an HIV/AIDS vaccine published in the last two decades. Accompanied by extensive comments putting the material into an up-to-date context, all three parts of the book offer a broad overview of the numerous unsuccessful attempts made in recent years to develop a preventive HIV vaccine. Providing a detailed review and analysis of studies published from 1998 to the present day, it examines the likely reasons for the failure to develop an HIV vaccine despite multi-million dollar investments.