TABLE 4.

Mean survival times and organ burdens for groups of six BALB/c mice infected with the iff11Δ null mutant and control strains

Genotype (strain)Mean ± SD
Survival time (days)Kidney burden (log10 CFU/g)Brain burden (log10 CFU/g)
IFF11 (NGY152)9.0 ± 4.56.3 ± 0.62.1 ± 0.7
iff11Δ (SBC102)27.7 ± 0.83.2 ± 2.11.5 ± 0.4
iff11Δ + IFF11 (SBC104)10.7 ± 8.56.0 ± 0.32.2 ± 0.8