El. Palavecino et al., Prevalence and mechanisms of macrolide resistance in Streptococcus pyogenes in Santiago, Chile, ANTIM AG CH, 45(1), 2001, pp. 339-341
Thirty-two macrolide-resistant Streptococcus pyogenes isolates were found a
mong 594 clinical isolates collected from 1990 to 1998 in Santiago, Chile,
for an overall prevalence of 7.2%. Among the 32 resistant isolates, 28 (87.
5%) presented the M phenotype and 4 (12.5%) presented the MLSB phenotype. S
erotyping and pulsed-field gel electrophoresis analysis showed genetic dive
rsity among the resistant isolates.