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Background Information: Salmonella enterica subsp. enterica serovar Pomona (antigenic formula 28:y:1,7) is a serovar of the O:28 (M) serogroup. This serovar was first isolated 1941 from poultry. 

NCBI PD link for serovar Pomona: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Pomona%22)

Genetic Characteristics:

Animal Reservoir: This serovar has been commonly found in turtles and other reptiles, including alligators

Geographic Distribution: This serovar has been reported from countries worldwide, including the US, the UK, Germany, China, Mexico, and Australia

Human Outbreaks:

Year

Location

Associated source

Number of cases

2023US: multistateSmall turtles801
2022US: multistateSmall turtles282
2011-2013US: multistateSmall turtles4733

1This outbreak was linked to serovars Pomona, Stanley, and Poona. The case number represents the total number of cases associated with the outbreak and does not specifically indicate the number of people infected by Salmonella Pomona.

2This outbreak was linked to serovars Pomona (3 cases) and Stanley (25 cases).

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Relevant Links and References: 

  1. https://doi.org/10.1093/oxfordjournals.aje.a118994
  2. https://doi.org/10.1016/j.scitotenv.2013.08.025
  3. https://doi.org/10.1177/0300985816677149
  4. https://www.cdc.gov/salmonella/outbreaks/turtles-08-23/index.html
  5. https://www.cdc.gov/salmonella/outbreaks/stanley-07-22/investigation.html
  6. https://archive.cdc.gov/www_cdc_gov/salmonella/small-turtles-03-12/index.html