Backround of the case in this episode: the FDA, CDC, and many states' public health officials investigated the multistate outbreak of human infections due to Salmonella serotype Typhimurium (2008-2009.) According to the CDC, 714 persons infected had been reported from 46 states and Canada. The real numbers were believed to be much higher, since for every reported case of salmonellosis, on average, another 38 or so cases go unreported, according to the CDC. Approximately 24% reported being hospitalized. Infection may have contributed to nine deaths. This contamination event triggered the most extensive food recall ever in U.S. history - involving at least 361 companies and 3,913 different types of products manufactured using PCA ingredients.