Table 1 Bacterial strains

Ye O9

Y. enterocolitica serotype O9; clinical isolate

provided by R Ignatius

WA-P

Y. enterocolitica serotype O8; clinical isolate; WA-314 pYVO8⁺

Heesemann and Laufs, 1983²⁶

WA-C

Virulence plasmid cured derivative of WA-P, Nal^R

Heesemann and Laufs, 1983²⁶

WA-P inv⁻

WA-P Δinv, Nal^R

Ruckdeschel et al, 1996²⁷

WA-C inv⁻

Virulence plasmid cured derivative of WA-P Δinv, Nal^R

Ruckdeschel et al, 1996²⁷