| resistance of streptococcus pyogenes to erythromycin and related antibiotics in italy. the italian surveillance group for antimicrobial resistance. | a survey of antimicrobial resistance in streptococcus pyogenes, performed within the framework of a national surveillance program, has revealed a dramatic increase in resistance of s. pyogenes to erythromycin in most areas of italy. in virtually all the centers that provided data for 3 consecutive years, the incidence of erythromycin-resistant strains increased twofold to 20-fold from 1993 to 1995 and was greater than 30% in five of the 14 centers participating in the study. the clonality of ery ... | 1998 | 9710676 |
| molecular typing of erythromycin-resistant streptococcus pyogenes strains with the m phenotype isolated in italy. | to assess the spread of the new m phenotype, various erythromycin-resistant streptococcus pyogenes strains from three italian cities (verona, monza, florence) were characterised. each strain was analysed for the presence of genes ermam and mefa, for the ability to accumulate radioactive erythromycin in the absence of sodium arsenate, for the protein t serological type, and for the dna macrorestriction profile identified by means of pulsed-field gel electrophoresis. in a number of strains, the pr ... | 1999 | 10385014 |