Shigella Outbreak Response Guide for Catering Companies

Immediate Actions: Isolation, Notification & Investigation

The moment you receive notification of a suspected or confirmed Shigella case, isolate all affected events and products from your operation immediately. Contact your local health department (LHDS) and state epidemiology unit as required by CDC regulations—do not wait for confirmation before engaging authorities. Document the event date, menu items, guest list, preparation staff, and any illness reports within your customers or employees. Shigella, transmitted through fecal-oral contamination, can spread rapidly in food service environments; the FDA and FSIS expect catering operations to initiate a full trace-back of ingredients, equipment, and handling procedures. Secure all storage logs, temperature records, and preparation timelines—these are essential for the health department's investigation and your legal protection.

Staff Communication, Health Screening & Exclusion Protocols

Notify all staff who handled food during the implicated event or preparation period immediately and confidentially. Per CDC guidelines, employees showing symptoms of gastroenteritis (diarrhea, fever, abdominal cramps) must be excluded from food preparation until they receive medical clearance—typically 48 hours after symptom resolution for Shigella, or as your state health department mandates. Provide information on Shigella transmission (fecal-oral route) and emphasize handwashing with soap and water (alcohol-based sanitizers are ineffective against Shigella). Encourage staff to report symptoms early and without fear of retaliation; many states have anti-retaliation laws protecting food workers who report illness. Offer paid sick leave or alternative work to reduce pressure on employees to come in sick.

Product Traceability, Testing & Health Department Coordination

Conduct a complete trace-back of all raw ingredients and finished products from the outbreak event, working backward through your suppliers. Preserve samples of suspect items in frozen or refrigerated storage as directed by your local health department—they may request these for laboratory testing to identify the source. Coordinate directly with your suppliers (produce farms, protein distributors, dairy vendors) and ask them to verify their own traceability records and any outbreak notifications they've received from the FDA or their state agency. Work with your health department inspector to determine which products require recall or destruction and follow their guidance on notification timelines and customer outreach. Document all product movements, supplier communications, and testing results; the FDA expects full cooperation and transparency during an outbreak investigation.

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