S. Corvallis¶

At a Glance


Antigenic Formula	`8,20:z4,z23:[z6]`
Serogroup	O:8 (C2-C3)
NCBI Pathogen Detection	View isolates

Background Information¶

Salmonella enterica subsp. enterica serovar Corvallis (antigenic formula 8,20:z₄,z₂₃:[z₆]) is a serovar of the O:8 (C₂-C₃) serogroup. This serovar was first isolated from the pooled cecal contents of poults affected with enteritis in the United States in 1949. Higher prevalence of serovar Corvallis was observed in humans and food products in non-European countries.

Genetic Characteristics¶

Serovar Corvallis has been found to be polyphyletic with six lineages identified. By analyzing 388 Corvallis ST1541 isolates collected globally within a twenty-year period, Chen et al. found that the ST1541 strains carried ColRNA1 plasmids that contain qnr-like determinants. Their Bayesian analysis also inferred that the UK might be the origin of S. Corvallis strains currently prevailing in multiple regions. Fischer et al. identified NDM-1 carbapenemase-producing strains isolated from a wild bird in Germany.

Animal Reservoir¶

Serovar Corvallis was found to be associated withpigsin South-East Asia. This serovar was also isolated from chicken and dogs.

Geographical Distribution¶

Serovar Corvallis has been found globally such as the UK and the US.

Human/Animal Outbreaks¶

Year	Location	Associated source	Number of cases
2001	Japan	Lunch (suspected)¹	7

¹ Four Salmonella isolates were obtained from the lunch including three Brandenburg isolates from three dishes and one Corvallis isolate from another dish.

S. Corvallis¶

Background Information¶

Genetic Characteristics¶

Animal Reservoir¶

Geographical Distribution¶

Human/Animal Outbreaks¶

Border Rejections¶

Recalls¶

References¶