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NCBI PD link for serovar IV 48:g,z51:-: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=IV%2048:g,z51:-%22)

Genetic characteristics: IV Serovar IV:48:g,z₅₁:- has been found to be polyphyletic with four lineages identified and one stand-alone singleton that does not cluster with any other Salmonella IV:48:g,z₅₁:- isolates. IV:48:g,z₅₁:- isolates showed intermediate resistance to AmC, CTX, CAZ, and Te. The CFSAN039533 strain harbored multiple virulence genes associated with SPI-1, SPI-2, SPI-3, SPI-5, and fimbriae. Despite carrying resistance genes linked to the aminoglycosides family, the strain displayed a susceptible phenotype. Genomic analysis and carbon source utilization assessment revealed that the strain possesses the ability to metabolize a wide range of compounds associated with central metabolic pathways.

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Human outbreaks: Unclear, but there have been no recent human outbreaks linked to this serovar. 

Border rejections: There have been no recent border rejections linked to this serovar.

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1. https://www.pasteur.fr/sites/default/files/veng_0.pdf
2. https://www.cdc.gov/Mmwr/preview/mmwrhtml/00015963.htm
3. https://publications.aap.org/pediatrics/article-abstract/99/3/399/67501/Iguanas-and-Salmonella-Marina-Infection-in?redirectedFrom=fulltext
4. https://www.sciencedirect.com/science/article/pii/S156713482030157X?via%3Dihub
5. https://pubmed.ncbi.nlm.nih.gov/14668712/
6. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1547190/full
7. https://onlinelibrary.wiley.com/doi/epdf/10.1111/zph.12093