Foodborne Outbreak Interview Questionnaires
To identify a food source of an outbreak, public health officials interview sick people to find out what they ate before getting sick. This page has links to several standard questionnaires used.
National Hypothesis Generating Questionnaire (NHGQ)
The NHGQ collects a standard set of information about food and other exposures for all outbreak cases identified during a multistate investigation. For some multistate outbreaks, CDC works with state partners to use the NHGQ to collect the same information across many states. This helps investigators identify a common food source more quickly.
Additional Standard Questionnaires
- Minnesota Questionnaire [PDF – 13 pages]
- Minnesota Questionnaire [DOC – 13 pages]
- Oregon Questionnaire [PDF – 6 pages]
- Oregon Questionnaire [DOC – 6 pages]
Case Report Forms
- Listeria Case Report Form [PDF – 17 pages]
- Listeria Case Report Form – Spanish version [PDF – 15 pages]
- Cholera and Other Vibrio Illnesses Report Form [PDF – 7 pages]
- National Outbreak Reporting System (NORS) Reporting Forms and Guidance