Shigella Prevention for Denver Food Service (2026)

Sanitation Protocols & Food Handler Hygiene

Denver food service establishments must implement rigorous handwashing and sanitation procedures to prevent Shigella transmission, which spreads primarily through fecal-oral contamination. Staff should wash hands with soap and warm running water for at least 20 seconds after restroom use, before food preparation, and after handling raw foods—handwashing is the single most effective barrier against Shigella. All food contact surfaces, utensils, and cutting boards must be cleaned with hot water and sanitizer (bleach solution or approved sanitizing agents) every 4 hours and immediately after preparing raw foods. Denver Public Health requires documentation of sanitation logs; establish written procedures and train all employees quarterly on proper technique.

Employee Health Screening & Exclusion Policies

Colorado health code mandates that employees with diarrheal illness be excluded from food preparation duties immediately. Implement a pre-shift health questionnaire asking staff about gastrointestinal symptoms, recent diarrhea, or confirmed Shigella exposure; document responses and exclude symptomatic employees until they are symptom-free for 24 hours without medication. Shigella can shed in stool for weeks after symptoms resolve, so consider requiring negative test results before return for confirmed cases. Denver Public Health recommends notifying the health department of suspected Shigella cases in your facility; epidemiologists may conduct interviews to identify source and secondary transmission risks. Establish a clear sick leave policy that does not penalize employees for reporting illness.

Temperature Control & Cross-Contamination Prevention

While Shigella is primarily a sanitation-related hazard rather than temperature-dependent, proper food handling prevents secondary contamination of ready-to-eat items. Keep hot foods above 135°F and cold foods below 41°F; use calibrated thermometers and log temperatures daily as required by Denver food code. Prevent cross-contamination by maintaining separate cutting boards, utensils, and prep areas for raw and ready-to-eat foods, and store raw proteins below ready-to-eat items in refrigerators. Train staff that Shigella prevention relies on hand hygiene and sanitation, not cooking temperatures—ready-to-eat foods like salads, deli meats, and produce are highest risk if contaminated by infected handlers. Work with your health inspector during routine inspections (Denver requires inspections every 1–3 years) to identify potential contamination pathways in your facility design and workflow.

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