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Donkor ES. Molecular typing of the pneumococcus and its application in epidemiology in sub-Saharan Africa. Front Cell Infect Microbiol 2013; 3:12. [PMID: 23503978 PMCID: PMC3596783 DOI: 10.3389/fcimb.2013.00012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 02/25/2013] [Indexed: 01/15/2023] Open
Abstract
Molecular typing of the pneumococcus has played a crucial role in understanding the epidemiology of the organism. However, most of what is known about molecular epidemiology of the pneumococcus pertains to the developed world. The brunt of pneumococcal infections is borne by sub-Saharan African countries, which makes epidemiological monitoring of the pneumococcus essential in this region of the world. This review paper focuses on molecular typing of the pneumococcus and what is known about epidemiology of the organism in sub-Saharan Africa based on the various typing methods. Several molecular typing methods are available for typing the pneumococcus and the major ones include multilocus sequence typing (MLST), multilocus enzyme electrophoresis (MLEE), serotyping and DNA fingerprinting methods such as pulsed field gel electrophoresis (PFGE) and amplified fragment length polymorphism (AFLP). Currently, MLST is the most suitable method for typing the pneumococcus. The pneumococcal population structure in sub-Saharan Africa appears to be quite different from that of the developed world, and pneumococcal serotype 1 related to the ST 618 clone and clones of the ST 217 clonal complex are responsible for outbreaks in sub-Saharan Africa.
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Affiliation(s)
- Eric S Donkor
- Department of Microbiology, University of Ghana Medical School Accra, Ghana.
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Diancourt L, Passet V, Verhoef J, Grimont PAD, Brisse S. Multilocus sequence typing of Klebsiella pneumoniae nosocomial isolates. J Clin Microbiol 2005; 43:4178-82. [PMID: 16081970 PMCID: PMC1233940 DOI: 10.1128/jcm.43.8.4178-4182.2005] [Citation(s) in RCA: 1040] [Impact Index Per Article: 54.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A multilocus sequence typing (MLST) scheme was developed for Klebsiella pneumoniae. Sequences of seven housekeeping genes were obtained for 67 K. pneumoniae strains, including 19 ceftazidime- and ciprofloxacin-resistant isolates. Forty distinct allelic profiles were identified. MLST data were validated against ribotyping and showed high (96%) discriminatory power. The MLST approach provides unambiguous data useful for the epidemiology of K. pneumoniae isolates.
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Affiliation(s)
- Laure Diancourt
- Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris, Cedex 15, France, Eijkman-Winkler Center, University Medical Center Utrecht, 3508 GA Utrecht, The Netherlands
| | - Virginie Passet
- Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris, Cedex 15, France, Eijkman-Winkler Center, University Medical Center Utrecht, 3508 GA Utrecht, The Netherlands
| | - Jan Verhoef
- Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris, Cedex 15, France, Eijkman-Winkler Center, University Medical Center Utrecht, 3508 GA Utrecht, The Netherlands
| | - Patrick A. D. Grimont
- Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris, Cedex 15, France, Eijkman-Winkler Center, University Medical Center Utrecht, 3508 GA Utrecht, The Netherlands
| | - Sylvain Brisse
- Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris, Cedex 15, France, Eijkman-Winkler Center, University Medical Center Utrecht, 3508 GA Utrecht, The Netherlands
- Corresponding author. Mailing address: Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris, Cedex 15, France. Phone: 33 (0) 1 40 61 33 57. Fax: 33 (0) 1 45 68 88 37. E-mail:
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