Abigail Salyers, PhD, and Dixie Whitt, PhD, are renowned scientists and educators. The authors first book, Bacterial Pathogenesis: A Molecular Approach (ASM Press, 1994) was widely hailed as landmark text in microbial pathogenesis and has been used at hundreds of colleges and universities around the world. Abigail Salyers served as codirector of the microbial diversity at the Woods Hole Marine Biology Laboratory from 1994 to 1999, and was elected president of the American Society of Microbiology in recognition of her contribution to the fields of microbial pathogenesis, diversity, evolution, and antibiotic resistance. Dixie Whitt has served in numerous capacities on ASM boards throughout her career and as the Chair of the ASM Membership Committee. Both authors have lectured widely on microbiology and have won awards for excellence in teaching at the university of Illinois.