Figure 6

Bacterial virulence tested in an intraperitoneal murine infection model. Kaplan-Meier curves show the survival of mice after infection with either 1 × 107 (A) or 1 × 106 (B) CFU/ml bacterial inoculum, with five mice per group. Kaplan-Meier survival curves of the IN- and HA-infected mice were analyzed with the Log-rank test. IN, initial isolate; HA, host-adapted isolate.