Prevalence and characterization of Salmonella in pigs from conventional and organic farms and first report of S. serovar 1,4,[5],12:i:- from Korea

•MDR Salmonella incidence was significantly more in conventional than organic farms.•MLVA showed clonal dissemination of S. Typhimurium and S. 1,4,[5],12:i:- strains.•Spread of blaCTX-M-15 was due to both clonal spread and horizontal dissemination.•First report on the occurrence of Salmonella seroty...

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