Stacked Bar Plot from Scientific Research

The prevalence of L. monocytogenes is shown by facility during sampling conducted in two seasons: year 1 (Y1) and year 2 (Y2). A total of 39 and 24 samples were collected per facility in Y1 and Y2, respectively. The presence and absence of viable L. monocytogenes , as determined by an enrichment method, is shown in pink and orange, respectively. The p -values denote significant differences between samples collected in Y1 and Y2 using a two-proportion Z -test to statistically evaluate the differences in the occurrence of L. monocytogenes

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