S. Richmond¶

At a Glance


Antigenic Formula	`6,7:y:1,2`
Serogroup	O:7(C1)
NCBI Pathogen Detection	View isolates

Background Information¶

Salmonella enterica subsp. enterica serovar Richmond (antigenic formula 6,7:y:1,2) is a serovar of the O:7(C₁) serogroup.¹ Serovar Richmond has been isolated from turtles, tilapia, moringa leaf powder, aqueducts, onion, fish products, and poultry.^{2,3,4,5,6,7,8}

Genetic Characteristics¶

Serovar Richmond has displayed multi-drug resistance (AMP/CAZ/CTX/CN/KF/KZ/S/TE/NA).⁵

Animal Reservoir¶

Unknown

Geographical Distribution¶

Serovar Richmond has been associated with food products from India⁹ and has been found in Europe, Thailand, and Korea.^2,4,5

Human Outbreaks¶

Outbreaks have been associated with S. Richmond.

Year	Location	Associated source	Number of cases
2025-2026	US: multistate	Moringa leaf powder dietary supplements¹	131
1993	Spain	Water from an aqueduct that flowed near the camp	45²
2025	United States	Moringa leaf powder	11⁹

¹ The total of 131 cases includes cases caused by serovars Salmonella Newport, Richmond, and Typhimurium

Animal Outbreaks¶

There have been no recent animal outbreaks linked to this serovar.

Border Rejections¶

Year	Exporting country	Importing country	Associated source	Product category
2023	Hungary	Germany	Onion powder	Other food product / mixed

Recalls¶

Year	Location	Recalled food	Type
2025	United States	Moringa leaf powder	Other food product / mixed