A statistical methodology was developed to investigate the presence of the six bacterial species in the chosen fresh fruits and vegetables, and to provide an overview of the results and general trends observed over the several years of sampling. This method- ology combines the use of three statistical tools: 1) control charts, 2) seasonal indices and 3) confidence intervals for the prevalence. The analyses are based on the percentage of positive samples for a given bacterial species and for all bacterial species combined (i.e., global sample result).