Clonal and temporal patterns of nasopharyngeal penicillin-susceptible and penicillin-resistant Streptococcus pneumoniae stains in children attending a day care center.

Journal of Clinical Microbiology
J L PonsJ F Lemeland

Abstract

The nasopharyngeal carriage of penicillin-susceptible and penicillin-resistant Streptococcus pneumoniae (PSSp and PRSp, respectively) was analyzed in 116 children attending a day care center in Rouen, France, by three observation periods in November, January, and March of the winter of 1993 to 1994. The carriage rate of S. pneumoniae was found to be 47.7, 47.3, and 49.6% at each different observation period, and PRSp accounted for 42.2, 40.3, and 40.6% of pneumococcal isolates, respectively. The 52 isolates recovered in November were distributed in 34 electrophoretic types (ETs) by multilocus enzyme electrophoresis; 15 PRSp isolates, all of serotype 23F, belonged to a clonal complex of five ETs, representing the dominant population of PRSp in November. The temporal pattern of S. pneumoniae carriage was studied in 17 children who were colonized at the three periods by multilocus enzyme analysis of their isolates. The PSSp isolated, exhibiting distinct ETs, were transient only among these day care attendees. In contrast, most of the PRSp isolated in January and March belonged to the clonal complex. Thus, this PRSp population was resident in the day care center throughout the study period.

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Citations

Apr 9, 1998·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·E MelanderS Mölstad
Jan 19, 2008·Expert Opinion on Pharmacotherapy·Javier AspaFelipe Rodríguez de Castro
Mar 11, 2009·Journal of Medical Microbiology·Alessandra C AlvesRenata O Mattos-Graner
May 1, 2002·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Makoto ItoMitsuru Furukawa
Jul 14, 2005·Scandinavian Journal of Infectious Diseases·Gunnar TomassonKarl G Kristinsson
Jul 20, 2001·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·A BorerP Yagupsky
Aug 29, 2001·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·G V Doern
Sep 28, 1998·Biochimica Et Biophysica Acta·D C Hooper
Dec 8, 2005·Journal of Clinical Microbiology·Jaime MorenoElizabeth Castañeda
Nov 1, 2002·Journal of Clinical Microbiology·Kazuhiko HoshinoTsuyoshi Nagatake

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