Environmental Health Specialist how-to

How to Investigate a Foodborne Illness Complaint

Fast investigation can stop an outbreak.

Updated By the Career Education Institute Curriculum Team
Quick answer

Fast investigation can stop an outbreak. In short: interview; collect; look, then complete the remaining steps below.

Step by step

  1. Interview the person about symptoms, onset and foods eaten.

  2. Collect a 72-hour food history.

  3. Look for links with other complaints.

  4. Inspect the suspected establishment.

  5. Collect food samples if available.

  6. Coordinate with epidemiologists and labs.

Safety reminders for environmental health specialists

  • Wear gloves and protective gear around sewage and contaminated areas
  • Follow vehicle safety while driving between sites
  • Use caution with pool chemicals
  • De-escalate tense situations and know when to leave

Food code · Temperature danger zone · Critical violation · Cross-contamination · HACCP · Plan review: see the full environmental health specialist glossary.

More environmental health specialist how-to guides

Enroll in trainingTake fit quiz