Draft genome sequence of multi-resistant Salmonella enterica subsp. enterica serovar Rissen strain 19CS0416 isolated from Vietnam reveals mcr-1 plasmid mediated resistance to colistin already in 2013.

We report the first draft genome sequence of a strain with plasmid-mediated resistance to colistin encoded by gene in Vietnam. serovar Rissen was isolated from a Vietnamese pig slaughterhouse in 2013. We can confirm that gene is identical to the first reported gene of the strain SHP45, isolated in 2015 from a Chinese pig. The plasmid containing this gene in the strain 19CS0416 was highly related (96.86% identity) to the plasmid (pHNSHP45) contained in this Chinese strain. Moreover, this plasmid was determined to be 100% identical to a plasmid (p13P477T-7) belonging to an (13P477T) found in Hong Kong during the same year in pigs. Our results will aid in understanding the dissemination of gene in East Asia, dating back to as early as 2013.