Medicine, Division of Geographic Medicine and Infectious Diseases, New England Medical Center, until 2001. He then joined the faculties of the Department of Epidemiology and Preventive Medicine and Department of Microbiology and Immunology at the University of Maryland Medical School. Currently at the FDA, his research concentration is on foodborne pathogens and encompasses a mixture of molecular pathogenesis, cell biology, and epidemiology. Specifically, his research focuses on Shiga toxin-producing E. coli and understanding toxin interaction with intestinal epithelial cells using tissue culture models. His laboratory has also undertaken a study to examine Shiga toxin-producing E. coli in food animals in relation to virulence factors and antimicrobial resistance patterns. More recently, Dr. Acheson initiated a project to understand the molecular pathogenesis of Campylobacter jejuni. Other studies have undertaken surveillance of diarrheal disease in the community to determine causes, outcomes, and risk factors of unexplained diarrhea. Dr. Acheson has authored/co-authored over 72 journal articles, and 42 book chapters and reviews, and is coauthor of the book Safe Eating (Dell Health, 1998). He is reviewer of more than 10 journals and is on the editorial board of Infection and Immunity and Clinical Infectious Diseases. Dr. Acheson is a Fellow of the Royal College of Physicians, a Fellow of the Infectious Disease Society of America, and holds several patents.

RUTH L. BERKELMAN, M.D., is the Rollins Professor and Director, Center for Public Health Preparedness and Research at the Rollins School of Public Health at Emory University. She came to Emory University in 2000 following 20 years with the Centers for Disease Control and Prevention (CDC), where she had served as an Assistant Surgeon General both in the position as Senior Adviser to the Director, CDC, and as Deputy Director, National Center for Infectious Diseases. In the mid-1990s, she led CDC’s efforts to address the threat of emerging infectious diseases. Her career began as an Epidemic Intelligence Service (EIS) Officer, and her expertise is primarily in infectious diseases and disease surveillance. Dr. Berkelman is board certified in pediatrics and internal medicine, and is a graduate of Harvard Medical School. She is active in the Infectious Diseases Society of America and the American Epidemiologic Society, and she currently serves on the Policy and Scientific Affairs Board of the American Society of Microbiology. She also consults with the Nuclear Threat Initiative on reduction of the threat of biologic weapons.

ENRIQUETA C. BOND, Ph.D., is President of the Burroughs Wellcome Fund. Dr. Bond received her undergraduate degree from Wellesley College, her M.A. from the University of Virginia, and her Ph.D. in molecular biology and biochemical genetics from Georgetown University. She is a

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