A. Carattoli et al., Expanding drug resistance through integron acquisition by IncFI plasmids of Salmonella enterica typhimurium, EM INFECT D, 7(3), 2001, pp. 444-447
We conducted a 30-year retrospective analysis of IncFI plasmids from Salmon
ella enterica serotype Typhimurium. These plasmids have been associated wit
h the emergence of epidemic clones of multidrug-resistant Salmonella. Molec
ular and genetic evidence indicates that IncFI plasmids are evolving throug
h sequential acquisition of integrons carrying different arrays of antibiot
ic-resistance genes.