| This book would not have been possible without the cooperation of countless men and women whose generosity of spirit contributed to the massive task of keeping track of the ever-evolving global picture on infectious disease. |
| Thanks to everyone who gave time and effort at the National Institutes of Health, the medical libraries of the National Library of Medicine, the Hershey Medical Center, and the University of Pennsylvania Medical Center. Thanks to staffers at Pharmaceutical Research and Manufacturers of America, to Eli Lilly, Astra USA, Bristol-Myers, Ciba-Geigy, Hoffmann-LaRoche, Pfizer, Smith-Kline Beecham, and Solvay Pharmaceuticals. Thanks also to the staffs of the Centers for Disease Control and Prevention, the National Institute of Allergy and Infectious Diseases, the World Health Organization and its Collaborating Center on AIDS, the Food Safety and Inspection Service, the American Public Health Association, the International Research Foundation for Helicobacter and Intestinal Immunology, Allan Brownstein at the American Liver Foundation, the American Leprosy Missions, the National AIDS Clearinghouse, the National Vaccine Compensation Program, the Emerging Infections Information Network, the WHO Division of Control of Tropical Diseases, the WHO Emerging and Other Communicable Diseases Surveillance and Control, the National Center for Infectious Disease, the folks at the Bug Bytes web site, and the American Lyme Disease Foundation. |
| Finally, my thanks as ever to my agent Bert Holtje, to the very patient Anne Baxter at Facts On File, and to Michael and Kara. |
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