Table 4.

Presumptive phenotypes of erythromycin resistance

OrganismNo. (%) of isolates with the following phenotype:
Constitutive MLSBInducible MLSBEfflux (M)
S. pneumoniae (n = 588)551 (93.7)4 (0.6)33 (5.6)
S. pyogenes (n = 416)8 (2)36 (8.5)372 (89.5)