Table 1.

Phagocytosis of GAS in human blood

StrainRelevant genotypeAmount of GAS (CFU) ina:
InoculumWhole bloodPlasma
JRS4emm6 (wild type)1.65 × 102 ± 0.11 × 1021.28 × 104 ± 0.05 × 1042.15 × 104 ± 0.03 × 104
JRS145Δemm61.89 × 102 ± 0.13 × 1020.75 × 101 ± 0.43 × 1012.94 × 104 ± 0.25 × 104
JRS470emm6 (wild type) ΔsagA0.94 × 102 ± 0.11 × 1029.50 × 101 ± 0.50 × 1012.07 × 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.