Volume 6, Number 2—April 2000
Dispatch
Erythromycin Resistance in Streptococcus pyogenes in Italy
Matteo Bassetti*
, Graziana Manno*, Andrea Collidà*, Alberto Ferrando*, Giorgio Gatti*, Elisabetta Ugolotti*, Mario Cruciani†, and Dante Bassetti*
, Graziana Manno*, Andrea Collidà*, Alberto Ferrando*, Giorgio Gatti*, Elisabetta Ugolotti*, Mario Cruciani†, and Dante Bassetti*Table 2
Frequency of clarithromycin failure, by susceptibility profile
| Patients treated (no.) | Treatment failed (%) | p value | |
|---|---|---|---|
| Erythromycin-susceptible | 25 | 3 (12) | |
| Erythromycin-resistant | 19 | 7 (36.8) | 0.07a |
| - CRb | 6 | 6 (100) | 0.0001a |
| - other phenotypes | 13 | 1 (7.6) | 1.0a; 0.0002c |
| Total | 44 | 10 (22.7) |
aFor comparison of percentage of failure with erythromycin-susceptible.
bCR = Constitutive-type resistance.
cFor comparison of percentage of failure between CR and other phenotypes of resistance.
