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Created by
user-2cb76, last updated by Brad Yang on May 12, 2025
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Background: Salmonella enterica subsp. enterica serovar Oranienburg (antigenic formula 6,7,14:m,t:[z57]) is a serovar of the O:7 (C1) serogroup. S. Oranienburg ranks 13th among human salmonellosis cases in the U.S. This serovar has been isolated from multiple sources (domesticated animals, wild animals, and soil). One outbreak in dairy calves was reported in Michigan, the outbreak strains showed resistance to ciprofloxacin and cephalotin. In Argentina, an strain encoding extended-spectrum β-lactamases was reported in a pediatric hospital.
Animal reservoir: Animal reservoirs for S. Oranienburg include bovine, equine, porcine, chicken, canine, and wild animals.
Geographical distribution: S. Oranienburg is commonly found in North and Latin America. In these regions, it ranks among the most common 15th Salmonella serovars. However, outbreaks in other regions (Australia, Japan, and Europe) have been reported.
Human outbreaks:
Year | Location | Associated source | Number of cases |
| 2021 | US-multistate | Onions | 892 |
| 2016 | US-multistate | shell eggs | 8 |
2006 | US-Canada | Fruit salad | 41 |
2005 | Australia | Alfalfa sprouts | 125 |
2001 | Europe | Chocolate | 439 |
1999 | Japan | Dry squid | 1634 |
1998 | Canada | Cantaloupe | 21 |
1998 | Australia | Gelato | 102 |
Border rejections: Multiple border rejections linked to serovar Oranienburg have been reported. The majority of them were linked to black pepper imported from Brazil to Germany.
Year | Exporting country | Importing country | Associated source | Product category |
| 2022 | Brazil | Germany | Black pepper | Herbs and spices |
| 2021 | Brazil | Germany | Black pepper1 | Herbs and spices |
| 2020 | US | Greece | Fish meal | Feed materials |
| 2020 | Brazil | Germany | Black pepper2 | Herbs and spices |
1 Salmonella Oranienburg and Javiana were found.
2 Salmonella Morehead and Oranienburg were found.
Recalls:
| Year | Location | Recalled product | Type |
|---|---|---|---|
| 2024 | Finland | Eggs1 | Eggs and egg products |
| 2023 | Canada, US: multistate | Cantaloupe2 | Fruits and vegetables |
| 2021 | US: multistate | Whole, fresh onions3 | Fruits and vegetables |
| 2001 | Germany | Chocolate4 | Confectionery |
1 Root cause analysis identified possible cross-contamination from a positive Salmonella sample as the source of error.
2 This recall was caused by a national outbreak described above. Whole melons from Crown Jewels Produce were recalled.
3 This recall was caused by a multistate outbreak described above. ProSource Produce, LLC and Keeler Family Farms of Deming issued recalls.
4 This recall was caused by an international outbreak described above.
Relevant links:
- https://webgate.ec.europa.eu/rasff-window/screen/notification/524928
- https://webgate.ec.europa.eu/rasff-window/screen/notification/524019
- https://webgate.ec.europa.eu/rasff-window/screen/notification/418605
- https://webgate.ec.europa.eu/rasff-window/screen/notification/416416
- https://www.foodsafetynews.com/2024/07/lab-error-behind-false-salmonella-finding-in-finland/
- https://www.marlerblog.com/case-news/more-cantaloupe-recalled-due-to-salmonella-oranienburg-and-sundsvall-outbreak/
- https://www.fda.gov/safety/major-product-recalls/2021-recalls-food-products-associated-onions-prosource-produce-llc-and-keeler-family-farms-due
- https://pmc.ncbi.nlm.nih.gov/articles/PMC552305/
- http://link.springer.com/article/10.1186%2F1471-2334-5-7
- http://www.ncbi.nlm.nih.gov/pubmed/16850895
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5639a3.htm
- http://www.ncbi.nlm.nih.gov/pubmed/23425126
- http://www.ncbi.nlm.nih.gov/pubmed/20464138
- http://www.ncbi.nlm.nih.gov/pubmed/20939741
- http://www.fda.gov/Food/RecallsOutbreaksEmergencies/Outbreaks/ucm523017.htm
- https://doi.org/10.1111/zph.13174