TABLE 2.

Competition assays with micea

Strain descriptionMedian CINo. of miceP valuebFold attenuation
Kat1.114NScNS
Ahp1.204NSNS
HpxF0.075<0.000114
  • a Mice were inoculated intraperitoneally with a mixture of two strains. At day 2 after injection, spleens were harvested for bacterial counts. CIs of wild-type versus Kat, wild-type versus Ahp, and wild-type versus HpxF strains were determined.

  • b A one-sample t test was used to determine whether the CI was significantly different from 1.

  • c NS, not significant.