TABLE 1

Numbers of mice that succumbed to or cleared infection after i.v. inoculation with a very small inoculum

Inoculum size (no. of cells)StrainNo. (%) of mice that:
Succumbed to infectionCleared infection and surviveda
50H998 (100)0 (0)
R2653 (38)5 (62)
5H996 (60)4 (40)
R2651 (10)9 (90)
  • a  “Cleared” is defined as no CFU detected in the brain, lungs, or spleen.