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Effect of shelf life modifications on the cumulative probability distribution of the L. monocytogenes concentration in contaminated pork shoulder packages (product 87 in Table 1) at the end of shelf life. □, current shelf life of 113 days; ○, shelf life of 50 days; ▵, shelf life of 36 days. Dotted lines indicate the level corresponding to compliance with the 100-CFU/g safety criterion.
