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Geographical distribution: S. Kentucky is widely distributed. In the U.S., it is commonly found in animals (specifically cattle and poultry) and in meat. In Europe, Asia and Africa, this serovar is also regularly isolates isolated from humans with symptoms consistent with salmonellosis.

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Relevant genetic characteristics: Whole genome sequences for two strains of S. Kentucky, one from a human (str. CDC 191) and one from chicken breast (str. CVM29188), have been deposited at GenBank as of October, 2013. Genomic characteristics of the sequenced S. Kentucky include (i) a genome size ranging from 4.7-5.09 Mb, (ii) a mol G+C% ranging from 51.9-52.2, and (iii) 4,735 to 5,295 predicted genes. Salmonella Kentucky str. CVM29188 is a multidrug resistant strain that contains three plasmids of 46, 101, and 146 kb. The two large plasmids are conjugative plasmids that carry antimicrobial resistance genes. The largest plasmid of 146 kb shows the same backbone and virulence genes as virulence plasmids of Avian Pathogenic E. coli (APEC). Partial sequences of a region in Salmonella Kentucky strain SRC73 are deposited at GenBank. This strain, from Indian spices, is a multidrug resistant strain that contains the resistance genes inserted in the chromosome in a genomic island (Salmonella Genomic Island 1 variant SGI1-K).

Phylogenetic and pan-genomic analyses that included completely sequenced S. Kentucky and other Salmonella serovars concluded that S. Kentucky (i) belong belongs to clade A, according to den Bakker et al. (2011) classification and , (ii) appear appears to have several evolutionary origin, and (iii) contains 127 gene families unique to this serovar.

Genome sequences available

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