How should the questionnaire be administered?
The questionnaire is designed to be administered by telephone interviewers trained in communicable disease investigation. After revising the template to incorporate the details of the outbreak under investigation, the questionnaire should be photocopied and given to interviewers as a paper document. Responses should be recorded on the paper copy, as the questionnaire template is not intended for use as an on-screen computer document. The recipients of the calls made by the telephone interviewers are individuals who have been identified as having potentially been exposed to contaminated foods. Their names and phone numbers are provided by event organizers in some cases, or in other cases, are obtained via questioning of other exposed persons. Note that the questionnaire format is not appropriate for self-administration (i.e. a survey that is mailed or handed-out to exposed persons).