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Background: Salmonella enterica subsp. enterica serovar Kiambu (antigenic formula 1,4,12:z:1,5) is a serovar of the O:4 (B) serogroup. Serovar Kiambu was found to be one of the most common Salmonella serovars in chicken in Ontario, Canada. More specifically, an Canadian study revealed that serovar Kiambu was the most commonly identified serovar through CRISPR-SeroSeq and the third most frequently by culture in Ontario poultry farms. Interestingly, while previous studies on Ontario farms had rarely reported this serovar, these findings suggest that serovar Kiambu is an emerging but underreported serovar in Ontario's poultry production systems.
NCBI PD link for serovar Kiambu: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Kiambu%22)
Genetic characteristics: Two serovar Kiambu isolates (SRC10 and SRC11) exhibited resistance to all antibiotics in the standard SGI1-containing DT104 set (Ap, Cm and Fl, Sm and Sp, Su, and Tc).
Animal reservoir: The reservoir for serovar Kiambu remains unknown, but chickens may and cattle may be a potential hosthosts. This serovar has also been isolated from other animals, including cattle and pigs.
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Year | Location | Associated source | Type |
| 2023 | US: multistate | Dry dog food1 | Pet food |
1 This recall was resulted by a multistate outbreak described above. Multiple brands including Victor, Eagle Mountain, Wayne Feeds, and some Member's Mark varieties issued a recall.
Relevant links:
- https://journals.asm.org/doi/10.1128/aem.01923-22
- https://journals.asm.org/doi/10.1128/jb.187.13.4401-4409.2005
- https://pubmed.ncbi.nlm.nih.gov/35617326/#:~:text=When%20present%2C%20concentrations%20of%20Salmonella,%2C%20and%20Michigan%20(12.1%25).
- https://www.sciencedirect.com/science/article/pii/S002203022101078X
- https://www.cdc.gov/salmonella/outbreaks/dog-food-10-23/investigation.html?CDC_AAref_Val=https://www.cdc.gov/salmonella/kiambu-11-23/details.html
- https://archive.cdc.gov/#/details?url=https://www.cdc.gov/salmonella/kiambu-07-17/index.html
- https://www1.health.gov.au/internet/main/publishing.nsf/Content/cda-cdi3201o.htm
- https://webgate.ec.europa.eu/rasff-window/screen/notification/522349
- https://webgate.ec.europa.eu/rasff-window/screen/notification/471644
- https://webgate.ec.europa.eu/rasff-window/screen/notification/451084
- https://www.fda.gov/animal-veterinary/outbreaks-and-advisories/fda-and-cdc-investigate-cases-salmonella-linked-pet-food-made-mid-america-pet-food-multiple-brands
- https://journals.asm.org/doi/10.1128/aem.01923-22
- https://www.sciencedirect.com/science/article/pii/S002203022101078X
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1151792/
- https://europepmc.org/article/pmc/pmc3675922