Shigella Prevention Guide for Philadelphia Food Service

Sanitation Protocols & Hand Hygiene Requirements

Hand hygiene is the most critical defense against Shigella transmission, as the pathogen spreads through fecal-oral contamination even in microscopic amounts. PDPH requires food handlers to wash hands thoroughly with soap and warm running water for at least 20 seconds after using restrooms, before food preparation, and between tasks. Install signage at all hand-washing stations and maintain soap, paper towels, and hot water availability. Shigella can survive on surfaces for hours; sanitize food preparation areas, utensils, and restroom door handles every 2–4 hours using EPA-approved quaternary ammonia or chlorine-based sanitizers (200–400 ppm for surfaces). Prohibit bare-hand contact with ready-to-eat foods and implement single-use gloves, changing them between tasks and after restroom use.

Employee Health Screening & Illness Reporting

PDPH mandates that food service facilities maintain written employee health policies requiring staff to report gastrointestinal symptoms (diarrhea, abdominal cramps, vomiting) before reporting to work. Shigella has a 1–3 day incubation period, so early detection prevents rapid spread. Employees confirmed with Shigella by medical professionals must not work until they have been symptom-free for 48 hours without medication, per CDC and PDPH guidance. Train all staff on symptom recognition and create a non-punitive reporting system so employees feel comfortable disclosing illness. Document all illness reports and maintain confidential health records. Consider requiring a physician's note or negative stool culture before return-to-work for cases with confirmed Shigella exposure.

Temperature Control & Cross-Contamination Prevention

While Shigella primarily spreads through contaminated food rather than heat exposure (it's destroyed at 165°F), temperature monitoring ensures food safety across all pathogens. Store raw produce separately from ready-to-eat foods and animal proteins; use dedicated cutting boards, utensils, and prep surfaces for each category. Philadelphia health inspectors verify that food handlers use color-coded cutting boards (green for produce, red for meat) and maintain proper separation in refrigeration units. Wash all produce under running water before use, even pre-packaged items, to reduce surface contamination risk. Implement a documented cleaning schedule for coolers and food storage areas weekly, documenting dates and staff responsible.

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