- Earlier this week FDA published a draft guidance titled Establishing Sanitation Programs for Low-Moisture Ready-to-Eat Human Foods and Taking Corrective Actions Following a Pathogen Contamination Event. (See publication notice at 90 Fed. Reg. 1052 (January 7, 2025)). Examples of low-moisture, ready-to-eat (LMRTE) foods include powdered infant formula, peanut butter, nut butters, powdered drink mixes, chocolate, medical foods in powdered and paste forms, processed tree nuts, milk powders, powdered spices, snack foods such as chips and crackers, granola bars, and dry cereal.
- The draft guidance is intended to help manufacturers/processers of LMRTE human foods comply with 21 CFR part 117 (Current Good Manufacturing Practice (CGMP), Hazard Analysis, and Risk-Based Preventive Controls (HARPC) for Human Food) and, in the case of infant formula manufacturers, the requirements in 21 CFR part 106. In particular, the draft guidance provides FDA’s current thinking regarding:
- Establishing and implementing a sanitation program and environmental monitoring program
- Conducting root cause investigations following a pathogen contamination event
- Applying a sanitizing treatment when remediating a pathogen contamination event
- Taking steps to identify affected food; and
- The limitations of relying solely on a product testing program to verify that pathogen contamination has been eliminated
- The draft guidance includes a discussion of CGMPs necessary to control pathogens in LMRTE foods. Controlling water and maintaining a dry production site is a key feature of FDA’s recommended approach. The draft guidance notes that cleaning— removing residue from a food contact surface (FCS) — is distinct from sanitizing treatments (designed to kill pathogens) and that in dry processing conditions, cleaning and sanitizing is usually done sequentially. The draft guidance cautions that “material flush techniques,” which clean a FCS by pushing product or other materials (e.g., hot oil) through the FCS, are ineffective methods to kill pathogens.
- Among the points raised in its discussion of HARPC components applicable to a sanitation program, the draft guidance recommends the identification of Salmonella spp. as a hazard requiring a preventive control for products which are exposed to the environment before packaging and which are not treated. Similarly, the draft guidance recommends the identification of Cronobacter spp. as a hazard in the case of powdered infant formula products exposed to the environment before packaging that do not receive a kill step or other control measure.
- In its discussion of preventive control step verification activities and root cause analysis, the draft guidance expresses a strong preference for identifying pathogens using whole genome sequencing (WGS) because of its much greater specificity and ability to discriminate between different pathogenic strains. Where WGS is not used, FDA recommends maintaining samples so that they can be characterized by WGS later if necessary (e.g., in a root cause investigation following a contamination event).
- The draft guidance also indicates in several sections that finished product testing has limitations and should not be solely relied upon for verification of preventive controls or identifying affected food. Finished product testing will be particularly ineffective at identifying hazards which are present at low levels and which are unevenly distributed.
- Comments to the draft guidance should be submitted by May 7, 2025.
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National Law Review, Volume XV, Number 9