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Genetic characteristics: 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.

Animal reservoir: Reptiles such as snakes and lizards are the main reservoirs for serovar IV:48:g,z₅₁:-.

Geographical distribution: Based on the NCBI PD metadata, serovar IV 48:g,z₅₁:- has only been reported in Europe, Brazil, and North America including the US, Canada, and Mexico. A West Indies study also isolated serovar IV 48:g,z₅₁:- from wild and domestic green Iguanas (Iguana iguana). 

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