Quick Summary for Operators
New updates to the FDA Food Code allow culture-independent diagnostic tests (CIDTs) — not just stool cultures — to clear some employees after STEC, Shigella, or nontyphoidal Salmonella (NTS). In many cases, reinstatement still requires two consecutive negative lab results from a validated test and, depending on your jurisdiction, regulatory approval. Time-based alternatives (e.g., 7 days or 30 days after symptoms end) may also apply.
What Changed in the Food Code?
The Supplement to the 2022 Food Code (PDF) revised §§ 2-201.13(E)(1), (F)(1), and (G)(1): instead of only “2 negative stool cultures,” operators may accept two consecutive negative laboratory results from a validated test performed by an accredited or certified clinical laboratory — explicitly opening the door to CIDTs. The Supplement also adds public-health reasoning about CIDTs and clarifies time-based pathways for asymptomatic workers.
Always verify how your state or local health department has adopted these provisions before changing policy. The FDA hosts the current Food Code and Supplement online.
Return-to-Work Criteria (High Level)
Below is an operator-friendly summary:
Shigella spp. (Shigellosis)
- Option A (testing): Two consecutive negative lab results from a validated test (e.g., CIDT or culture) using an accredited/certified lab; specimens ≥ 48 hours after antibiotics stop and ≥ 24 hours apart; regulatory approval may be required.
- Option B (time): If symptoms have resolved, > 7 calendar days since becoming asymptomatic; or > 7 days since diagnosis if no symptoms developed.
STEC (Shiga toxin–producing E. coli)
- Option A (testing): Same as above — two negatives by validated test (CIDT or culture), timing relative to antibiotics as specified; regulatory approval may be required.
- Option B (time): > 7 days after symptoms resolve, or > 7 days after diagnosis if asymptomatic.
Nontyphoidal Salmonella (NTS)
- Option A (testing): Two consecutive negative validated tests (CIDT or culture) from an accredited/certified lab; timing relative to antibiotics applies; regulatory approval may be required.
- Option B (time): > 30 days after symptoms resolve, or > 30 days after diagnosis if asymptomatic.
The Supplement also explains why CIDTs are acceptable for clearance and how asymptomatic staff should be restricted vs. excluded until criteria are met.
Build a CIDT-Aware Employee Illness SOP
- Update written policy to reflect CIDT acceptance and time-based alternatives, including who obtains regulatory approval when required.
- Specify documentation: exactly what proof managers must collect (test type, lab accreditation/certification, collection timing).
- Define “restricted” duties for asymptomatic workers (no direct contact with RTE foods) until full reinstatement criteria are met.
- Train managers to act on illness reports immediately and to differentiate diagnosed vs. undiagnosed symptoms (24-hour return for undiagnosed symptoms after resolution still applies).
- Align with your FSMS (logs, sign-offs, verification). Need help? See Custom QA Programs and Food Safety Operations & Training.
What to Tell Managers and Employees
- Report diarrhea, vomiting, jaundice, and any diagnosis of Shigella, STEC, or NTS immediately.
- Don’t return to full duties until clearance criteria are met and, if required, the health department signs off.
- Reinforce handwashing and no bare-hand contact with RTE foods on return. (CDC reiterates strict hygiene on return to work after shigellosis.)
When to Contact the Health Department
Your jurisdiction may require approval before reinstating workers after certain diagnoses. Build that step into your SOP and pre-save the contact info for quick action.
Tools and Services
- Custom QA Programs: We’ll rewrite your Employee Health Policy (Form 1-A/1-B equivalents), add CIDT language, and build verification logs.
- Food Safety Operations & Training: Manager training on illness reporting, restriction vs. exclusion, and documentation.
- Foodborne Illness Complaint Support: Rapid response playbooks and regulatory communication when a complaint or outbreak is alleged.
FAQs
Do CIDTs replace stool cultures for clearance?
Not necessarily. The Supplement adds CIDTs as an option by allowing “two consecutive negative laboratory test results from a validated test” using an accredited/certified lab; cultures are still acceptable.
Are time-based returns allowed without testing?
Yes, under specific conditions. For Shigella/STEC, some workers may return after 7 days (post-symptom or post-diagnosis if asymptomatic); for NTS, after 30 days. Always follow your jurisdiction’s adoption and any required regulatory approval.
What about undiagnosed vomiting/diarrhea?
Undiagnosed employees whose symptoms have resolved may return to full duties after 24 hours (local adoption applies). Diagnosed cases follow stricter rules above.
Compliance Reminder
The FDA Food Code is a model; states and localities adopt it with variations. Confirm requirements with your regulatory authority and update internal SOPs accordingly.
