Genotypic Analysis of Invasive Streptococcus pneumoniae from Mali, Africa, by Semiautomated Repetitive-Element PCR and Pulsed-Field Gel Electrophoresis

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Genotypic analysis of invasive Streptococcus pneumoniae from Mali, Africa, by semiautomated repetitive-element PCR and pulsed-field gel electrophoresis.

As part of a large, ongoing study of invasive infections in pediatric patients in Bamako, Mali, 106 cases of invasive pneumococcal disease were identified from June 2002 to July 2003 (J. D. Campbell et al., Pediatr. Infect. Dis. J. 23:642-649, 2004). Of the 12 serotypes present, the majority of isolates were not contained in PCV7 (the 7-valent pneumococcal conjugate vaccine), including 1 isolat...

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Characterization of Streptococcus pneumoniae ophthalmic, systemic & commensal isolates by pulsed-field gel electrophoresis & ribotyping.

BACKGROUND & OBJECTIVE Streptococcus pneumoniae is common in ocular and systemic infections and is a part of normal nasopharyngeal flora. Very few studies regarding genetic analysis of S. pneumoniae isolates causing eye infections are available. This study was undertaken to do pulse field gel electrophoresis (PFGE) analysis and ribotyping of S. pneumoniae isolates obtained from eye infections, ...

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Genotypic identification and phylogenetic analysis of the spotted fever group rickettsiae by pulsed-field gel electrophoresis.

Using pulsed-field gel electrophoresis, we studied the chromosomes of spotted fever group rickettsiae. We digested the DNA of 16 species currently known to belong to this group with SmaI, EagI, and BssHII. The genome size of 13 rickettsiae was between 1,200 and 1,300 kb. "Rickettsia massiliae" and "R. helvetica" genome sizes were 1,370 and 1,397 kb, respectively, and that of R. bellii was 1,660...

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Genotypic characterization of Salmonella enteritidis phage types by plasmid analysis, ribotyping, and pulsed-field gel electrophoresis.

Pulsed-field gel electrophoresis (PFGE) was used to resolve XbaI and SpeI macrorestriction fragments from 60 defined phage type (PT) reference strains of Salmonella enteritidis. The level of discrimination was compared to that afforded by plasmid profile analysis and ribotyping. Twenty-eight distinct XbaI pulsed-field profiles (PFPs) were observed, although a single type, PFP X1, predominated. ...

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Analysis of an outbreak of Salmonella enteritidis by repetitive-sequence-based PCR and pulsed-field gel electrophoresis.

OBJECTIVE The aim of this study was to investigate a large food-borne outbreak associated with eggs contaminated by Salmonella Enteritidis in a military unit using pulse field gel electrophoresis (PFGE) and the Repetitive-sequence-based PCR (rep-PCR) employing the DiversiLab system. MATERIALS AND METHODS In mid-January 2008, a food-borne outbreak associated with S. Enteritidis occurred in a m...

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ژورنال

عنوان ژورنال: Journal of Clinical Microbiology

سال: 2007

ISSN: 0095-1137,1098-660X

DOI: 10.1128/jcm.01871-06