F Veverka, MPH, N Shapiro, MA, Delaware City/County Health Dept, Delaware.
MK Parish, MS, S York, MPH, W Becker, DO, F Smith, MD, State Epidemiologist,
Ohio Dept of Health. C Allensworth, T Baker, MPH, Douglas County Health Dept,
Omaha; P Iwen, MS, Nebraska Public Health Laboratory, T Safranek, MD, State
Epidemiologist, Nebraska Dept of Health and Human Svcs. Div of Parasitic Diseases,
National Center for Infectious Diseases; Div of Applied Public Health Training,
Epidemiology Program Office; Div of Emergency and Environmental Health Svcs,
National Center for Environmental Health; and EIS officers, CDC.