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Background: Salmonella enterica subsp. enterica serovar Anatum (antigenic formula 3,{10}{15}{15,34}:e,h:1,6:[z64]) is a serovar of the O:3,10 (E1) serogroup. Serovar Anatum was first isolated from ducklings in the United States in 1920 byRettger and Scoville. Serovar Anatum has been reported as one of the top 20 Salmonella serotypes in the United States.

NCBI PD link for serovar Anatum: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Anatum%22)

Genetic characteristics: Serovar Anatum has been found to be monophyletic. Feng et al. concluded that a Salmonella Anatum outbreak in Taiwan was caused by a multidrug-resistant clone possessing bla_CMY-2–carrying plasmid (90-kb IncA/C plasmid). They also found that the entire collection of clinical Salmonella Anatum isolates belonged to sequence type 64, as determined by MLST. Zhao et al. revealed that the mutations found in the phage-resistant Anatum strains were associated with several single nucleotide polymorphisms (SNPs) related to membrane components.

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1. https://journals.asm.org/doi/pdf/10.1128/jb.30.3.269-276.1935
2. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1547190/full
3. https://pmc.ncbi.nlm.nih.gov/articles/PMC11014889/
4. https://doi.org/10.1111/zph.13174
5. https://pmc.ncbi.nlm.nih.gov/articles/PMC6606869/
6. https://archive.cdc.gov/www_cdc_gov/salmonella/anatum-9-17/index.html
7. https://wwwnc.cdc.gov/eid/article/26/12/20-0147_article
8. https://www.cdc.gov/mmwr/volumes/66/wr/mm6625a2.htm
9. https://webgate.ec.europa.eu/rasff-window/screen/notification/702610
10. https://webgate.ec.europa.eu/rasff-window/screen/notification/429238

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