“…However, the prevalence of mcr-1 in bacteria from dairy cattle remains low, ranging from 0.5% to 0.8% in China (He et al, 2017;Bai et al, 2018;Zheng et al, 2019), 2.6% in Egypt (Khalifa et al, 2016), and 0% in Brazil (Palmeira et al, 2018). Overall, there is a greater number of studies in cattle from European countries, including the Netherlands (Veldman et al, 2016), Germany (Falgenhauer et al, 2016), France (Brennan et al, 2016;Haenni et al, 2016;Lupo et al, 2018;Gay et al, 2019), Italy (Alba et al, 2018), Belgium (Malhotra-Kumar et al, 2016), Spain (Hernandez et al, 2017), and Portugal (Clemente et al, 2019), compared with Asian countries, where the majority of such studies comes from China (Wang et al, 2018b) and Japan (Suzuki et al, 2016;Kawanishi et al, 2017). However, levels of colistin resistance are consistently low.…”