Our knowledge of the group B coxsackieviruses has progressed dramatically in the past 60 years. Some of the most recent advances include the identification of the coxsackievirus-adenovirus receptor, the dissection of genetic elements linked to virulence/attenuation, examination of the impact of recombination in virus evolution and diversity, and analysis of the role of viral proteins in regulating host cell macromolecule synthesis and trafficking. The First Edition of this work, published in 1997, described the molecular biology of coxsackie B viruses, as well as clinical, epidemiological, and immunological aspects of group B coxsackievirus disease. Much has been accomplished in the past ten years, including determination of the crystal structure of a virus-receptor complex, significant advances in understanding the molecular details of virus-host interaction within the cell, and deeper insights into the systemic effects of virus infection and the host response. This Second Edition summarizes the current state of knowledge in group B coxsackievirus genomics and replication, receptor structure and function, host cell interactions, the host immune response and immunopathology, viral virulence and pathogenesis, and the role of this important group of vi