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Created by
Bella Chueh, last updated by Phutthaphorn Phaophu on Jun 22, 2025
2 minute read
Background: Salmonella enterica subsp. enterica serovar Rissen (antigenic formula 6,7,14:f,g:-) is a serovar of the O:7 (C1) serogroup. This serovar was first isolated from HOST in LOCATION in YEAR. Serovar Rissen is the XXth most common nontyphoidal Salmonella serotype isolated from human infections in LOCATION and is also among the top 20 most frequently reported Salmonella serotypes in the United States.
NCBI PD link for serovar Rissen: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#taxgroup_name:(%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Rissen%22)
Genetic characteristics:
Animal reservoir: Swine is the major animal reservoir of serovar Rissen, including pork production chain.
Geographical distribution: Serotype Rissen has been reported especially in Asian countries such as Thailand, China, and Vietnam, but also found in Italy, France, Spain.
Human outbreaks: XX outbreaks linked to Salmonella Rissen have been associated with SOURCES. Some examples are shown below.
Year | Location | Associated source | Number of cases |
2022 | Europe: multi-country | 72 | |
2011 | US: multistate | 106 | |
2008 | US: multistate | 28 | |
2008 | Europe: multi-country | 119 | |
2004 | France | 141 | |
2002 | Germany | 42 | |
1998 | US: multistate | 209 |
Border rejections: Multiple border rejections associated with serovar Rissen have been reported. Here we selected NUMBER as examples.
Year | Exporting country | Importing country | Associated source | Product category |
| 2024 | Poland | Italy | Poultry meat and poultry meat products | |
| 2022 | China | Sweden | Feed materials |
Recalls: Multiple recalls associated with serovar Rissen have been reported. Here we selected NUMBER as examples.
| Year | Location | Recalled food | Type |
|---|---|---|---|
| 2017 | France | Infant formula1 | Ultra-processed food |
| 1998 | US: multistate | Toasted Oats Cereal2 | Ready-to-Eat food |
1 This recall was caused by an outbreak of Salmonella enterica serovar Agona associated with infant formula products manufactured by the Lactalis Nutrition Santé group in France.
2 This recall was caused by an multistate outbreak of Salmonella serovar Agona infections linked to toasted oats cereal manufactured by Malt-O-Meal.
Relevant links:
1. https://www.pasteur.fr/sites/default/files/veng_0.pdf
2. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2021.702909/full
3. https://www.mdpi.com/2079-6382/9/10/660
4. https://www.veterinaryworld.org/Vol.16/May-2023/6.html
5. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.968695/full
6. https://www.pagepressjournals.org/index.php/ijfs/article/view/9362
7. https://www.nature.com/articles/s41598-024-62141-9
8. https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2021.705044/full