Salmonella Strathcona

Background: Salmonella enterica subsp. enterica serovar Strathcona (antigenic formula 6,7:l,z₁₃ ,z_28:1,7) is a serovar of the O:7 (C₁) serogroup. NCBI PD link for serovar Strathcona: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Strathcona%22)

Genetic characteristics: In 2019, according to the EU One Health Zoonoses Report, out of 22 Strathcona isolates, only one exhibited high-level resistance to ciprofloxacin, with a minimum inhibitory concentration (MIC) ≥ 4 mg/L.

Animal reservoir: Serovar Strathcona has been isolated from

Geographical distribution: Serovar Strathcona has been found in Europe, such as Denmark, Germany, and Italy, as well as in the UK and the US.

Outbreaks:

Year	Location	Associated source	Number of cases
2023-2024	Europe: multi-country & UK	Tomatoes	232¹
2011	Europe: multi-country	Datterino tomatoes	71²

¹ A total of 232 confirmed cases of serovar Strathcona ST2559 have been reported across 16 European countries. The cases were distributed as follows: Austria (33), Croatia (3), Czechia (10), Denmark (9), Estonia (1), Germany (62), Finland (3), France (23), Ireland (1), Italy (67), Luxembourg (2), the Netherlands (2), Norway (3), Slovakia (5), Slovenia (2), and Sweden (6). Additionally, 29 cases were reported in the United Kingdom.

²Denmark reported 43 cases, while an additional 28 cases were documented across Germany, Italy, Austria, and Belgium.

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Salmonella Strathcona