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Created by
YeonJin Jung, last updated by Brad Yang on May 04, 2025
1 minute read
Background: Salmonella enterica subsp. enterica serovar Norwich (antigenic formula 1,9,12:l,z13:e,n,x) is a serovar of the O:9 (D1) serogroup.
NCBI PD link for serovar Norwich: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Norwich%22)
Genetic characteristics:
Animal reservoir: Unknown, poultry may be the potential reservoir for serovar Norwich. This serovar was also isolated from other animals such as cattle, horses, and dogs.
Geographical distribution: According to the metadata from NCBI PD, serovar Norwich has only been reported in UK, US and Canada.
Human outbreaks:
Year | Location | Associated source | Number of cases |
|---|---|---|---|
| 1994 | US: MD | Unknown | 2 |
Border rejections: There have been no recent border rejections linked to this serovar.
Recalls: There have been no recent recalls linked to this serovar.
Relevant links:
- https://www.fsis.usda.gov/sites/default/files/media_file/documents/Risk_Profile_for_Pathogenic_Salmonella_Subtypes_in_Poultry.pdf
- https://pmc.ncbi.nlm.nih.gov/articles/PMC2626871/