Fig. 3From: Metagenomics of urban sewage identifies an extensively shared antibiotic resistome in ChinaArcGIS map showing the ARG burden based on urban populations of administrative districts in China. The black line on the map refers to the Chinese demographic “Hu Huanyong line”. The value presented in the legend was log transformed ARG burden (copies/day) discharged by urban populations. The ARG burden in Chinese administrative regions is calculated by multiplying the medium value of ARG load (9.47 × 1013 copies/cap/day) by total urban populationBack to article page