Which statement is true of any establishment that exposes ready-to-eat (RTE) product to the environment post-lethality?

• A. They are subject to the regulatory requirements of 9 CFR Part 430 (Lm regulations)
• B. They must develop a CCP at the final packaging step
• C. Its products are shelf stable and safe to eat at ambient temperatures
• D. They must perform an additional cooking step

Answer: (A)

Exposing ready-to-eat products to the environment after the lethality step creates a real risk of contamination with Listeria monocytogenes. Because of that, establishments with post-lethality exposure fall under 9 CFR Part 430, the Listeria monocytogenes regulations. These rules specify preventive controls and verification focused on the post-lethality environment, including sanitation programs, environmental testing, and corrective actions to prevent post-lethality contamination from reaching product. The other statements don’t fit the situation: a CCP at the final packaging step isn’t specifically mandated by these regulations for post-lethality exposure, not all post-lethality-exposed products are shelf-stable at ambient temperatures, and there isn’t a universal requirement to add an extra cooking step.