Fig. 6

Local clusters of Salmonella Enteritidis infection rates in Toronto identified by the Getis-Ord Gi* statistic. Significant clusters of forward sortation areas (FSAs) with high standardized incidence rates (SIRs) (Z-score ≥ 1.96; p ≤ 0.05). Significant clusters of FSAs with low SIRs (Z-score ≥ -1.96; p ≤ 0.05). A Euclidean distance band of 3.3 km, and the zone of indifference conceptualization parameter, were used for the analysis