Fig. 3
From: Spatial-temporal distribution of genotyped tuberculosis cases in a county with active transmission
Maps of TB Cases in 5 largest clusters in Harris County, TX 2009–2015. a. Point Density Analysis. The number of TB cases in each zip code was divided by the area in square miles of each zip code. b. Hot spot Analysis Map shows the distribution of hot and cold spots of TB cases with the 5 most common GENTypes. In Hot spot Analysis z-scores and p-values are used to identify features with either significantly high amount of clustering (hot spot) or low amount of clustering (cold spots) spatially