Clonal Spread of Streptococcus pyogenesemm44 among Homeless Persons, Rennes, France
Anne Cady , Céline Plainvert, Pierre-Yves Donnio, Pascaline Loury, Didier Huguenet, Alain Briand, Matthieu Revest, Samer Kayal, and Anne Bouvet
Author affiliations: Author affiliations: Centre Hospitalier Universitaire Pontchaillou, Rennes, France (A. Cady, P.-Y. Donnio, M. Revest, S. Kayal); University Paris Descartes, Paris, France (C. Plainvert, A. Bouvet); Université de Rennes1, Rennes (P.-Y. Donnio, S. Kayal); Cellule de l’Institut National de Veille Sanitaire en Région Ouest, Rennes (P. Loury, A. Briand); de l'Agence Régionale de Santé de Bretagne, Rennes (D. Huguenet)
Figure. Pulsed-field gel electrophoresis (PFGE) patterns of SmaI-restricted chromosomal DNA of Streptococcus pyogenesemm44 strains. Lane 1, Bacteriophage Lambda ladder PFGE Marker (New England Biolabs Inc., Beverly, MA, USA); lanes 2–11, PFGE patterns 44-A2, 44-A3, 44-A4, 44-A5, 44-A6, 44-A7, 44-A8, 44-A, 44-B, and 44-A1 of emm44 unrelated control strains; lanes 12–26 and 28–34, 22 identical 44-A1 PFGE patterns shared by the tetracycline-resistant outbreak isolates; lane 27, PFGE pattern 44-A5 of the nonclonal emm44 strain isolated during the same outbreak, which differs by 4 bands from the pattern 44-A1.
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