This book offers a concise yet comprehensive overview on critical issues in monitoring and responding to new microbial threats to blood safety. It provides information on the current concerns and mechanisms for monitoring potential new infectious threats to blood safety, evaluates the response to these new threats, and explores the complex issues related to blood safety, including health economics, the relationship between levels of public health threats (actual danger) versus public concerns (perceived danger), and the challenges in coordinating international collaborative efforts. The text also includes several case studies that illustrate the existing systems used for monitoring and responding to new threats to blood safety.