The Chicago Department of Public Health, with support of the US Food and Drug Administration, has created a telephone questionnaire to be used by departments of public health to gather information that can help establish the relationship between dose of foodborne pathogens and health impacts.  The documents below are made available in both html (for viewing) and pdf (for printing).  In addition, the questionnaire, in both English and Spanish, is made available as a downloadable Microsoft Word document for editing so that it may be used by departments of public health in outbreaks they may investigate.