Vibrio Prevention Guide for Austin Food Service

Temperature Control & Seafood Storage Requirements

Vibrio bacteria multiply rapidly in the danger zone (40°F–135°F), making temperature control your first line of defense. All raw oysters, clams, and mussels must be stored at 41°F or below and inventoried for shelf life. Cooked shellfish should reach an internal temperature of 145°F for 15 seconds; raw shellfish cannot be served unless properly sourced and labeled with harvest date, location, and vessel ID. Austin health inspectors verify refrigeration logs and thermometer calibration during routine inspections. Use time-temperature monitoring devices and document all seafood temperatures at receiving, storage, and service. Discard any shellfish that cannot be traced to a certified harvest area.

Sanitation Protocols & Cross-Contamination Prevention

Vibrio can transfer from contaminated surfaces, utensils, and ice to ready-to-eat foods. Implement dedicated cutting boards, knives, and utensils exclusively for raw seafood—never cross-use with other proteins or ready-to-eat items. Sanitize all surfaces and equipment contacting raw shellfish with a chlorine-based sanitizer (100 ppm for 7 seconds contact time) or quaternary ammonium solution per FDA Food Code standards. Change gloves between handling raw seafood and other foods. Train staff on the difference between cleaning (removing visible soil) and sanitizing (reducing pathogens to safe levels). Ice bins must be cleaned and sanitized daily, and ice should be made from potable water only. Austin Public Health provides specific sanitation standards in the Austin Food Rules; request a copy or access it through the City of Austin website.

Employee Health Screening & Training Requirements

Austin Public Health requires food establishment workers to report gastrointestinal illness, including diarrhea and vomiting, before handling food. Vibrio infection causes acute gastroenteritis and can be life-threatening for immunocompromised customers; staff must understand symptom recognition and exclusion policies. Conduct mandatory food safety training annually, with emphasis on raw seafood handling and Vibrio risk factors. Ensure all handlers know that Vibrio risk increases in warm months (May–October) and with consumption of raw or undercooked oysters. Document employee health attestations and training completion. Austin requires health permits for all food workers; verify current permits are posted and accessible. Establish a clear protocol for employees to report illness without fear of retaliation, and maintain a communication system to alert staff to active Vibrio alerts from CDC or state health departments.

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