Listeria monocytogenes (Lm) is a foodborne pathogen that has recently had a resurgence of attention due to several listeriosis outbreaks and food product recalls. Lm is particularly troublesome due to its ability to survive in the food processing environment and grow at refrigeration temperatures. Thus, even though a food product may be refrigerated, it is not uncommon for Lm numbers to increase by 10- or 100-fold over the shelf life of a food product if allowed to grow unabated. This is especially true for products like ready-to-eat meats, many of which are high risk for Lm contamination due to their exposure to the food processing environment and ability to support Lm growth. As a result, it is common for ready-to-eat meat manufacturers to utilize antimicrobial agents, antimicrobial processes, and post-lethality treatments as control measures for Lm. However, manufacturers must have strong validation data to support the efficacy of these Lm control measures (and claim status as an Alternative 1 or Alternative 2 process about 9 CFR 430).

This is where challenge studies come in. Challenge studies are carefully designed scientific procedures conducted in a laboratory, whereby products are "challenged" with Lm contamination to see how the product performs regarding Lm control. Based on the findings of the challenge study, the manufacturer may find that their product meets expectations concerning controlling Lm, or additional control measures may be necessary to prevent Lm outgrowth. Thus, challenge study data is often extremely valuable to food manufacturers as they assess their needs for imparting proper Lm controls.

This webinar will educate you on all aspects of challenge studies, from their purpose to how they are conducted at the laboratory, what data you can expect to see, and how to interpret the findings. It will also include a real-life testimonial from a food manufacturer who has had to use challenge study data to defend their company's processes. With increased scrutiny from regulators on Lm controls, this is a must-view webinar to learn how challenge studies can be a critical component of your establishment's overall Lm control plan.