ArticleJournal of clinical microbiology2005
Properties of novel international drug-resistant pneumococcal clones identified in day-care centers of Lisbon, Portugal.
Article in Journal of clinical microbiology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 26 citations in OpenAlex.
- Beneath the surface: a case report on nonencapsulatedAccess microbiology · 2024Article
- Properties of Mucoid Serotype 3Frontiers in cellular and infection microbiology · 2021Article
- The genetic diversity of commensal Escherichia coli strains isolated from non-antimicrobial treated pigs varies according to age group.PloS one · 2017Article
- Characteristics of serogroup 20 S.pneumoniae isolates from Brazil.BMC infectious diseases · 2016Article
- Clonal evolution leading to maintenance of antibiotic resistance rates among colonizing Pneumococci in the PCV7 era in Portugal.Journal of clinical microbiology · 2011Article
- Analysis of invasiveness of pneumococcal serotypes and clones circulating in Portugal before widespread use of conjugate vaccines reveals heterogeneous behavior of clones expressing the same serotype.Journal of clinical microbiology · 2011Article
- Denmark14-230 clone as an increasing cause of pneumococcal infection in Portugal within a background of diverse serotype 19A lineages.Journal of clinical microbiology · 2010Article
- Heteroresistance to penicillin in Streptococcus pneumoniae.Proceedings of the National Academy of Sciences of the United States of America · 2007Article
- Molecular epidemiology of telithromycin-resistant pneumococci in Finland.Antimicrobial agents and chemotherapy · 2007Article
- Phenotypic and molecular analysis of penicillin-nonsusceptible Streptococcus pneumoniae isolates in Poland.Antimicrobial agents and chemotherapy · 2007Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 2 countries.
Funding
Abstract
In this study, 61 drug-resistant Streptococcus pneumoniae strains were characterized by multilocus sequence typing (MLST). These strains were representatives of 26 major clones (defined using pulsed-field gel electrophoresis) accounting for 93% of the 1,285 drug-resistant Streptococcus pneumoniae isolates recovered from the nasopharynges of healthy children attending day-care centers in Lisbon during 2001 to 2003. Using MLST, 13 of the 26 clones were found to be identical or closely related to 11 Pneumococcal Molecular Epidemiology Network (PMEN) clones, 4 clones were found to be unique as there were no identical or highly related allelic profiles deposited in the MLST database, and the remaining 9 clones had sequence types that matched or differed at a single or double locus from allelic profiles available in the MLST database. These nine clones were of serotypes 33F, 10A, 19A, 19F, 6A, 20, 24F, and 3, one was nontypeable, and, by MLST, they were found to be identical or highly related to isolates from disease origin that were dispersed internationally. Since the majority of these clones had serotypes that are not included in the 7-valent conjugate pneumococcal vaccine, monitoring of these clones is important for surveying their possible spread in the future. We propose the inclusion of these novel international clones in the PMEN.
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