This report is based on data contributed by C McRill, MD, K Komatsu, MPH, W Humble, MPH, Arizona Dept of Health Svcs; L Sands, DO, MPH, Maricopa County Dept of Public Health, Phoenix, Arizona. T Wegrzyn, MPH, J Hadler, MD, Connecticut Dept of Public Health. S Wiersma, MD, Florida Dept of Health. P Blake, MD, S Lance-Parker, PhD, C Morin, MD, Georgia Dept of Human Resources, Div of Public Health. R Teclaw, DVM, M Wilkinson, Indiana State Dept of Health. M Currier, MD, S Slavinski, DVM, Mississippi Dept of Health. H Mackley, MPH, B Asante, MD, New York City Dept of Health. M Kohn, MD, E DeBess, DVM, L Davidoff, MD, M Scott, M Heumann, MA, Oregon Health Div; G Stevens, V Barbour, MSN, J Baures, J Manwaring, B Thomas, G Chakarun, Jackson County Public Health Dept, Medford; R Parlier, M Jaqua, M Breedlove, MBA, Yamhill County Health Dept, McMinnville, Oregon. J Rankin, Jr., DVM, C Coventon, MD, Pennsylvania Dept of Health, Bureau of Epidemiology. F Sassano, Bucks County Dept of Health, Doylestown; J Maher, MD, E Walls, Chester County Health Dept, Westchester; C Baysinger, M Supplee, MS, Montgomery County Human Svcs Center, Norristown; J Jahre, MD, St. Luke's Hospital Network, Bethlehem; N Sykes, MD, Jefferson Medical College, Philadelphia, Pennsylvania. R Stroube, MD, E Barrett, DMD, S Jenkins, VMD, Virginia Health Dept; J Florance MD, A Ansher MD, L Estrada MPH, B Bradshaw, Prince William Health Dept, Manassas, Virginia. J Hofmann, MD, J Van Eenwyk, PhD, Washington Dept of Health. L Haddy, MA, D Bixler, MD, West Virginia Dept of Health and Human Resources, Bur for Public Health; P Gordon, MD, Harrison-Clarksburg Health Dept Clarksburg, West Virginia. J Perdue, Texas Dept of Health; and other state and local health and education departments and schools. A Henderson, PhD, Div of Environmental Hazards and Health Effects, National Center for Environmental Health. A Adija, MD, K Griffith, MD, EIS officers, CDC.