Background: Salmonella enterica subsp. enterica serovar Adelaide (antigenic formula 35:f,g:-) is a serovar of the O:35 (O) serogroup. Serovar Adelaide was first isolated in 1943 from a fatal case of enteritis in a man in Adelaide, Australia. 

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

Genetic characteristics: Serovar Adelaide has been found to be polyphyletic with six lineages identified and three stand-alone singletons that do not cluster with any other Salmonella Adelaide isolates. The outer core structure of serovar Adelaide LPS seems to differ from that of serovar Typhimurium and other Salmonella strains.

Animal reservoir: Serovar Adelaide was found in wild boar, bovine, and caprine. 

Geographical distribution: Serovar Adelaide has primarily been reported in North America, including the US, Canada, and Mexico, but has also been found in Chile, Brazil, Australia, the UK, and Ethiopia. 

Human outbreaks:

Year

Location

Associated source

Number of cases

2018

US: multistate

Pre-cut melon

77

Border rejections:

Year

Exporting country

Importing country

Associated source

Product category

2021Ethiopia

Germany

Sesame seeds

Nuts, nut products and seeds

Recalls: There have been no recent recalls linked to this serovar.

Relevant links:

  1. https://onlinelibrary.wiley.com/doi/10.1038/icb.1943.23
  2. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1547190/full
  3. https://pubmed.ncbi.nlm.nih.gov/2284502/
  4. https://archive.cdc.gov/#/details?url=https://www.cdc.gov/salmonella/adelaide-06-18/index.html
  5. https://webgate.ec.europa.eu/rasff-window/screen/notification/505138


  • No labels