Figure 1

Summary of genetic characteristics of mcr-1-bearing Salmonella strains isolated from different sources. The isolation location and sources of the Salmonella isolates were designed as follow: ASHN1-ASHN19, Salmonella strains isolated from animal fecal samples from Henan province; ASSD1-ASSD2; Salmonella strains isolated from animal fecal samples from Shandong province; ASGD1-ASGD3, Salmonella strains isolated from animal fecal samples from Guangdong province; ASGX1-ASGX2, Salmonella strains isolated from animal fecal samples from Guangxi province; AFSGD1-AFSGD3, Salmonella strains isolated from food samples from Guangdong province; AFSSH1, Salmonella strains isolated from food samples from Shanghai province; SA258-SA266, Salmonella strains isolated from food samples in Shenzhen.