This is the not the type of letter a food processor wants to receive from FDA:
Your food safety plan for RTE Thai Noodle Salad and Macaroni and Cheese did not identify a preventive control for the food safety hazard of contamination of RTE products with an environmental pathogen, e.g., L. monocytogenes. These RTE products are exposed to the production environment prior to packaging and the packaged food does not receive a treatment or otherwise include a control measure. Furthermore, WGS (whole genome sequencing) analysis revealed two (2) different strains or clusters of L. monocytogenes that have become persistent in your facility.