*** This version of Confluence is for testing only and contains a copy of content from June 29th 2026. No changes will be preserved. ***
...
Genetic characteristics: Serovar Worthington has been found to be polyphyletic with 1 one lineage identified and 1 one stand-alone singleton that does not cluster with any other Salmonella Worthington isolates. Salmonella Worthington isolates from preharvest turkey production sources pose both virulence and persistence by carrying virulence genes, such as invA, aceK, and sopB, along with resistance to many antibiotics (tetracycline, erythromycin, bacitracin, novobiocin, and rifampin). Salmonella Worthington has been reported as having acquired the third-generation cephalosporin resistance plasmid (blaDHA-1-carrying IncFII plasmid) from Citrobacter amalonaticus.
...
Human outbreaks: Several human outbreaks have been associated with S. Worthington. Below are some examples.
| Year | Location | Associated Sourcesource | Number of Casescases |
|---|---|---|---|
| 2012 | US-multistate | Mangoes | 16 |
| 2005 | France | Milk powder | 49 |
| 2000 | India | No source or carrier identified | 16 |
| 1975 | Hong Kong | Tubing system of a suction apparatus | 18 |
| 1955 | Indonesia | Artificial feeding1 | 154 |
1 Because of limitation of serological procedure at that time, this outbreak might be caused by pathogenic E. coli or Salmonella Worthington or both organisms
Border Rejectionsrejections: One case of border rejections associated with serovar Worthington was reported.
...
1 This recall was caused by a multistate outbreak. Daniella brand mangoes grown in Mexico were recalled.
Relevant links and references:1.
...
...
...
...