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Wiki Markup*{+}Background:+{*}{_}Salmonella enterica_ subsp. _enterica_ serovar Coeln (antigenic formula Background: 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 very considered rare and is scarcely associated with human cases; only 32 human salmonellosis cases have been associated with this serovar during the last 10 years in the US. However, in Europe two outbreaks have been associated with S. Coeln, one in [France|http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=223] and a recent one in Norway.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.

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

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 Animal reservoir: S. Coeln has been isolated in high frequency (21.8%) in in wild boars in Italy. In addition, it has been isolated from water of coastal rivers in the western Mediterranean cost.

Geographical distribution: S. Coeln Serovar Coeln has only been mainly described in Europe.Outbreaks:Two outbreaks caused by S. Coeln have been reported in Europe. such as the UK, and Norway but has been also isolated in other non-European countries such as US, and Australia.

Human outbreaks: 

Relevant links:

1.      http://www.actavetscand.com/content/55/1/42

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Border rejections:

¹ Salmonella Poona, Minnesota, Coeln were found. 

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

Recalls:

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. 

Relevant links:

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

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1. ://www.eurosurveillance.org

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1. /content/10.2807/esm.06.02.00223-en
2. https://webgate.ec.europa.eu/rasff-window/screen/notification/469459
3. https://webgate.ec.europa.eu/rasff-window/screen/notification/465236
4. https://webgate.ec.europa.eu/rasff-window/screen/notification/455145
5. https://webgate.ec.europa.eu/rasff-window/screen/notification/721008
6. https://webgate.ec.europa.eu/rasff-window/screen/notification/567419