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Created by
user-9b773, last updated by Brad Yang on Jun 20, 2025
2 minute read
Background: Salmonella enterica subsp. enterica serovar Weltevreden (antigenic formula 3,{10}{15}:r:z6) is a serovar of the O:3,10 (E1) serogroup.
Genetic characteristics:
Animal reservoir:
Geographical distribution:
Human outbreaks:
Year | Location | Associated source | Number of cases |
| 2021 | US: multistate | Frozen pre-cooked shrimp | 9 |
| 2019 | Australia | Frozen microwave meals | 46 |
| 2015 | US: multistate | Frozen tuna | 651 |
| 2015 | Oman | Hummus (likely) | 101 |
| 2010 | India | Food comprising milk, rice, sprouted pulses and curd | 150 (8 confirmed) |
| 2007 | France | Unknown | 26 |
| 2007 | Europe: multinational | Alfalfa sprouts | 45 |
1 Sixty-five individuals across 11 states were reported infected with outbreak strains, including 64 cases of Salmonella Paratyphi B variant L(+) tartrate(+) and 1 case of Salmonella Weltevreden.
Border rejections: There have been no recent border rejections linked to this serovar.
Recalls:
| Year | Location | Recalled product | Type |
|---|---|---|---|
| 2024 | Finland | Turmeric powder from India | Herbs and spices |
| 2023 | US: multistate | Black fungus1 | Other food product / mixed |
| 2023 | Germany | Dried Mu-Err mushrooms from Vietnam, via Czech Republic | Other food product / mixed |
| 2021 | US: multistate | Frozen pre-cooked shrimp2 | Crustaceans and products thereof |
| 2019 | Australia | Frozen microwave meals3 | Other food product / mixed |
| 2007 | Denmark, Norway, Finland | Alfalfa sprouts4 | Fruits and vegetables |
1 Multiple Salmonella serovars including Salmonella Javiana, Mgulani and Weltevreden were found. AH USA Group Inc. issued a recall of its Black Fungus (Nam Meo) product.
2 This recall was caused by a multistate outbreak described above. Avanti Frozen Foods of India expanded its voluntary recall of frozen cooked shrimp on August 13, 2021. The expansion now includes products imported into US from November 2020 through May 2021.
3 This recall was caused by a multistate outbreak described above. Core Ingredients issued a recall for eight frozen pre-prepared meals with best-before dates ranging from March 5, 2020, to October 4, 2020.
4 This recall was caused by a multi-country outbreak described above.
Relevant links:
- https://archive.cdc.gov/www_cdc_gov/salmonella/weltevreden-06-21/index.html
- https://archive.cdc.gov/www_cdc_gov/salmonella/paratyphi-b-05-15/index.html
- https://www.foodsafetynews.com/2019/10/almost-50-ill-in-australian-salmonella-outbreak/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8242109/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC4418162/
- https://www.eurosurveillance.org/content/10.2807/ese.13.32.18949-en
- https://www.eurosurveillance.org/content/10.2807/esw.12.48.03321-en
- https://webgate.ec.europa.eu/rasff-window/screen/notification/688257
- https://www.foodsafetynews.com/2023/05/black-fungus-recalled-in-12-states-after-testing-finds-multiple-strains-of-salmonella/
- https://webgate.ec.europa.eu/rasff-window/screen/notification/597121
- https://www.fda.gov/food/outbreaks-foodborne-illness/outbreak-investigation-salmonella-weltevreden-frozen-pre-cooked-shrimp-april-2021#:~:text=CDC%20declares%20outbreak%20over.&text=The%20FDA%2C%20along%20with%20CDC,that%20the%20outbreak%20is%20over.
- https://www.eurosurveillance.org/content/10.2807/esw.12.48.03321-en