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S. Carrau

At a Glance

Antigenic Formula 6,14,[24]:y:1,7
Serogroup O:6,14 (H)
NCBI Pathogen Detection View isolates

Background Information

Salmonella enterica subsp. enterica serovar Carrau (antigenic formula 6,14,[24]:​y:1,7) is a serovar of the O:6,14 (H) serogroup. This serovar was first isolated from the glands of pigs, in 1936 in Uruguay. Serovar Carrau was considered a rare serotype and was found to cause septicemia in turtles.

Genetic Characteristics

Serovar Carrau has been found to be paraphyletic. A non-Carrau serovar, S. Madelia clusters within serovar Carrau. Karczmarczyk et al. reported uncommon high-level quinolone resistance with absence of any DNA gyrase mutations in serovar Carrau.

Animal Reservoir

Serovar Carrau was found inhorses, dogs, and wild animalssuch as snake, lizards, and turtles.

Geographical Distribution

Serovar Carrau has been reported inNorth America, South America, and Europe such as Finland, and the UK.

Human/Animal Outbreaks

Year Location Associated source Number of cases
2019 US: multistate Pre-cut melons 137

Border Rejections

No recent border rejections linked to this serovar have been reported.

Recalls

Year Location Recalled food Type
2019 US: multistate Pre-cut melons1 Fruits and vegetables

1 This recall was resulted by a multistate outbreak described above. Caito Foods LLC recalled pre-cut watermelon, cantaloupe, honeydew melon, and pre-cut fruit medley products.

References

  1. https://journals.asm.org/doi/10.1128/jb.47.4.323-326.1944?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed
  2. https://pubmed.ncbi.nlm.nih.gov/20883500/
  3. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1547190/full
  4. https://pubmed.ncbi.nlm.nih.gov/19968856/#:~:text=Species%20of%20tegu%20(Tupinambis)%20are,different%20patterns%20of%20antibiotic%20susceptibility.
  5. https://www.researchgate.net/publication/288172765_Salmonella_carrau_septicemia_in_a_South_American_river_turtle_Podocnemis_expansa
  6. https://www.cdc.gov/salmonella/carrau-04-19/index.html