Background: Salmonella enterica subsp. enterica serovar Mississippi. 

NCBI PD link for serovar Mississippi: 

Animal reservoir: Serovar Mississippi has been found in dogs. 

Geographical distribution: Endemic in Australia, the United Kingdom, and the United States. 

Human outbreaks:

Relevant links:

1. https://journals.asm.org/doi/10.1128/msphere.00485-21
2. https://pmc.ncbi.nlm.nih.gov/articles/PMC6711244/
3. https://doi.org/10.1111/zph.13174