Table 2.

ComparativeS. aureus densitiesa

Source of culture and time (h) culturedLog10 CFU/g of tissue ± SD (n) for indicated strainPvalueb
ISP479CISP479R
Vegetation
 486.5 ± 0.84 (11)7.8 ± 0.76 (8)0.008
 966.47 ± 1.56 (7)8.71 ± 0.05 (11)0.003
Kidney
 485.18 ± 3.4 (11)4.61 ± 0.9 (8)NS
 963.94 ± 2.1 (7)5.4 ± 4.0 (11)NS
Spleen
 484.34 ± 2.4 (11)4.6 ± 0.78 (8)NS
 964.73 ± 2 (7)6.85 ± 0.85 (11)0.014
  • a Animals were infected separately with a 95% infective dose of inoculum for either strain (∼3 × 106 CFU).

  • b NS, nonsignificant.