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Antimicrobial Agents and Chemotherapy, June 2000, p. 1453-1457, Vol. 44, No. 6
Service de Microbiologie, Hôpital
Robert Debré, 75019 Paris,1 and
Service de Microbiologie, Centre Hospitalier de Créteil,
94010 Créteil,2 France, and
Central Public Health Laboratory, London, United
Kingdom3
Received 2 September 1999/Returned for modification 26 December
1999/Accepted 3 March 2000
A total of 1,500 recent throat isolates of Streptococcus
pyogenes collected between 1996 and 1999 from children throughout France were tested for their susceptibility to erythromycin,
azithromycin, josamycin, clindamycin, and streptogramin B. The
erythromycin-resistant isolates were further studied for their genetic
mechanism of resistance, by means of PCR. The clonality of these
strains was also investigated by means of serotyping and ribotyping. In
all, 6.2% of the strains were erythromycin resistant, and 3.4 and
2.8% expressed the constitutive MLSB and M resistance
phenotypes and harbored the ermB and mefA genes, respectively; ermTR was recovered from one isolate
which also harbored the ermB gene. Ten serotypes and 8 ribotypes were identified, but we identified 17 strains by combining
serotyping with ribotyping. Among the eight ribotypes, the
mefA gene was recovered from six clusters, one being
predominant, while the ermB gene was recovered from four
clusters, of which two were predominant.
0066-4804/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Resistance to Macrolides in Streptococcus
pyogenes in France in Pediatric Patients
*
Corresponding author. Mailing address: Service de
Microbiologie, Hôpital R. Debré, 48 Bd Sérurier,
75019 Paris, France. Phone: 33 (1) 40 03 23 40. Fax: 33 (1) 40 03 24 50. E-mail: edouard.bingen{at}rdb.ap-hop-paris.fr.
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