Detection of mcr-4 positive Salmonella enterica serovar Typhimurium in clinical isolates of human origin, Italy, October to November 2016

Abstract

In this study we report the detection of the recently described <i>mcr-4</i> gene in two human isolates of <i>Salmonella enterica</i> serovar Typhimurium. The strains were isolated from faecal samples of two Italian patients with gastroenteritis, collected in 2016. The identified <i>mcr-4</i> genes (variant <i>mcr-4.2</i>) differed from the <i>mcr-4</i> gene originally described in a <i>Salmonella</i> strain of swine origin from Italy. <i>Salmonella</i> species could represent a hidden reservoir for <i>mcr</i> genes.