Background information: Salmonella enterica subsp. enterica serovar Ohio (antigenic formula 6,7,14:b:1,w) is a serovar of the O:7 (C1) serogroup. Serovar Ohio was first described in rodents in Malaysia. This serovar has been previously reported to cause septic arthritis and bone abscess in an immunocompetent patient.
NCBI PD link for serovar Ohio: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Ohio%22)
Genetic characteristics:
Animal reservoir: Chicken and pigs may be potential reservoirs for serovar Ohio. This serovar was also isolated from other animals such as horses and wild ducks (Anas platyrhynchos).
Geographical distribution: Serovar Ohio has been reported worldwide, but primarily in the UK and US (Out of 1,386 serovar Ohio isolates, 998 (72.0%) were from US, according to NCBI PD (accessed May 12, 2025)).
Human outbreaks:
Year | Location | Associated source | Number of cases |
| 2005 | Belgium | Pork | 60 |
| 2004 | Belgium | Unknown | 29 |
| 1998 | Spain | Waterborne | 59 |
Border rejections:
Year | Exporting country | Importing country | Associated source | Product category |
| 2025 | Thailand | Germany | Dog chews1 | Feed materials |
| 2020 | Denmark | Belgium | Fish meal | Feed materials |
1 Consignment was released.
Recalls:
| Year | Location | Recalled food | Type |
|---|---|---|---|
| 2024 | Finland, Denmark | Frozen pork cheek from Poland via Estonia1 | Meat and meat products (other than poultry) |
| 2024 | Italy | Frozen shelled clams from Turkey | Fish and fish products |
| 2023 | Czech Republic | Frozen dumplings with chicken filing from Lithuania2 | Other food product / mixed |
1 Salmonella Ohio, Typhimurium and Derby were found.
2 Salmonella Ohio and Infantis were found.
Relevant links: