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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 4th most common nontyphoidal nontyphoidal Salmonella serotype  serotype isolated from human infections in LOCATION and Thailand and is also among the top 20 most frequently reported reported Salmonella serotypes  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: Multiple border rejections associated with serovar Rissen have been reported. Here we selected five as examples.  Pornsukarom et al. reported that all Thai isolates in this study were multidrug-resistant and more than 90% were resistant to ampicillin, sulfisoxazole, tetracycline and streptomycin. , while in the USA, about half of the S. Rissen isolates were pan-sensitive

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. 

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