Skip to content

S. Coeln

At a Glance
Antigenic Formula 1,4,[5],12:y:1,2
Serogroup O:4 (B)
NCBI Pathogen Detection View isolates

Background Information

Salmonella enterica subsp. enterica serovar Coeln (antigenic formula 1,4,[5],12:​y:1,2) is a serovar of the O:4 (B) serogroup. This serovar is considered rare and is scarcely associated with human cases; only 32 human salmonellosis caseshave been associated with this serovar during the last 10 years in the US. Besides the animal reservoir described below, it has been isolated from water of coastal rivers in the western Mediterranean cost. In Spain, serovar Coeln was associated with one case of acute septic arthritis.

Genetic Characteristics

Serovar Coeln has been found to be polyphyletic with two lineages identified and one stand-alone singleton that does not cluster with any other Salmonella Coeln isolates. An Italian study revealed that one of the two Coeln isolates they analyzed exhibited resistance to antimicrobials (the specific class and number of drugs were not specified in the paper).

Animal Reservoir

Serovar Coeln has been isolated in high frequency (21.8%) in wild boars in Italy.

Geographical Distribution

Serovar Coeln has been mainly described in Europe such as the UK, and Norway but has been also isolated in other non-European countries such as US, and Australia.

Human/Animal Outbreaks

Year Location Associated source Number of cases
2021 Sweden Fresh Sprouts 52
2017 Norway TBD 18
2013 Norway Baby Leaf Mix 26
1998 France Minced beef 26

Border Rejections

Year Exporting country Importing country Associated source Product category
2021 Brazil Germany Black pepper1 Herbs and spices
2021 Brazil Germany Black pepper2 Herbs and spices
2020 Ukraine Latvia White hen shell eggs Eggs and egg products

1 Salmonella Poona, Minnesota, Coeln were found.

2 Salmonella Infantis, Coeln, Bonariensis, Newport, Matadi, Morehead were found.

Recalls

Year Location Recalled food Type
2024 Lithuania Frozen fillets of broiler chickens from Ukraine Poultry meat and poultry meat products
2022 Latvia Chicken thighs from Poland1 Poultry meat and poultry meat products

1 Serovar Coeln were found in 1 out of 5 samples. Official control measures were implemented in the market was issued but no stock remained.

References

  1. https://journals.asm.org/doi/full/10.1128/aem.66.4.1544-1552.2000
  2. https://pubmed.ncbi.nlm.nih.gov/38073261/
  3. https://pmc.ncbi.nlm.nih.gov/articles/PMC8065399/#:~:text=A%20total%20of%20164%20Salmonella,a%20matter%20of%20great%20concern.
  4. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1547190/full
  5. https://actavetscand.biomedcentral.com/articles/10.1186/1751-0147-55-42
  6. https://food.ec.europa.eu/document/download/bdb7770b-f932-4038-951d-516d63c3690b_en
  7. https://www.foodsafetynews.com/2021/11/sweden-solves-salmonella-outbreak-sprouts-identified-as-likely-source/
  8. https://www.foodnavigator.com/Article/2017/09/22/Salmonella-sickens-seven-in-Norway/
  9. https://pubmed.ncbi.nlm.nih.gov/26586305/
  10. https://www.eurosurveillance.org/content/10.2807/esm.06.02.00223-en
  11. https://webgate.ec.europa.eu/rasff-window/screen/notification/469459
  12. https://webgate.ec.europa.eu/rasff-window/screen/notification/465236
  13. https://webgate.ec.europa.eu/rasff-window/screen/notification/455145
  14. https://webgate.ec.europa.eu/rasff-window/screen/notification/721008
  15. https://webgate.ec.europa.eu/rasff-window/screen/notification/567419