Shigella Prevention in Baltimore Food Service

Baltimore & Maryland Regulatory Requirements

Baltimore City Health Department enforces the FDA Food Code alongside Maryland's Health-General Article §21-601, which mandates critical control point management for Shigella prevention. Food service facilities must implement exclusion policies for symptomatic employees, maintain documentation of handler illness reporting, and conduct daily temperature monitoring for potentially hazardous foods. BCHD conducts unannounced inspections focusing on hand hygiene stations, sanitizer concentration (200ppm chlorine or equivalent), and produce handling practices. Non-compliance can result in operational suspension or citations.

Common Shigella Contamination Sources & Risk Points

Shigella bacteria primarily contaminate raw produce (leafy greens, berries), ready-to-eat foods, and water supplies through fecal-oral transmission—often originating from infected food handlers with poor hand hygiene. Cross-contamination occurs when raw produce contacts cooked foods or food-contact surfaces. Baltimore's aging water infrastructure has occasionally required boil-water advisories in certain neighborhoods. High-risk settings include buffets, salad bars, and establishments with inadequate handwashing facilities. Shigella survives 3–7 days on surfaces, making environmental sanitation critical.

Implementation & Reporting Procedures

Baltimore facilities must establish mandatory symptom screening at shift start—excluding workers with diarrhea, vomiting, or jaundice for 24 hours after symptom resolution (per MDH guidance). Implement separate hand-washing stations with soap, hot water (100–110°F), and single-use towels; train staff monthly on proper technique (20 seconds minimum). For Shigella suspected or confirmed in a facility, immediately notify BCHD's Food Protection Division at 410-396-4969 and document all affected products, preparation dates, and exposed individuals. The CDC may initiate epidemiological investigation if multiple illnesses are reported; maintain records for 30 days minimum.

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