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Background: Salmonella enterica subsp. enterica serovar Sandiego (antigenic formula 1,4,[5],12:e,h:e,n,z15) is a serovar of the O:4 (B) serogroup. Serovar Sandiego oldest verified isolation was in 1929 in Denmark. It was in the top 15 most commonly reported Salmonella enterica serovars related to animal contact outbreaks in the United States during 2009–2014.

This serovar was also isolated from from turkey-processing plants in the USA in the 1960's. and pig farm environment in Brazil. Although there has been a limited number of research on Salmonella Sandiego, human infections caused by Salmonella Sandiego have been reported, such as a post-traumatic chronic subdural haematoma in an alcoholic heavy drinker patient, and a prevertebral neck abscess in a type 2 diabetes mellitus patient.

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Animal reservoir: Serovar Sandiego has been found in small turtles and their environments .  A 1951 case report from Canada mentions that it is and also found in birds. This serovar has also been found in dogs.  Swine slaughterhouse  turkey flocks. 

Geographical distribution: Serovar Sandiego has been found in the United States and Canada, and, reportedly, also in Uruguay, Denmark, and DenmarkBrazil.

Outbreaks: Several outbreaks have been associated with S. Sandiego, mostly associated with small pet turtles. There was a report on an outbreak of food poisoning with approximately 200 cases in California in 1938. Two isolates of Salmonella Sandiego were obtained from this outbreak.

Border Rejections:

Recalls: There have been no recent recalls linked to this serovar.

Relevant links and references:

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