Table 1.

Phagocytosis of GAS in human blood

StrainRelevant genotypeAmount of GAS (CFU) ina:
InoculumWhole bloodPlasma
JRS4 emm6 (wild type)1.65 × 102 ± 0.11 × 102 1.28 × 104 ± 0.05 × 104 2.15 × 104 ± 0.03 × 104
JRS145Δemm6 1.89 × 102 ± 0.13 × 102 0.75 × 101 ± 0.43 × 101 2.94 × 104 ± 0.25 × 104
JRS470 emm6 (wild type) ΔsagA 0.94 × 102 ± 0.11 × 102 9.50 × 101 ± 0.50 × 101 2.07 × 104 ± 0.17 × 104
  • a The ability of GAS to survive in fresh human blood was measured as described in the text. The numbers reported are the averages of two assays.