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Erdem G, Singh AK, Brusnahan AJ, Moore AN, Barson WJ, Leber A, Vidal JE, Atici S, King SJ. Pneumococcal colonization among tracheostomy tube dependent children. PLoS One 2018; 13:e0206305. [PMID: 30339709 PMCID: PMC6195293 DOI: 10.1371/journal.pone.0206305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 10/10/2018] [Indexed: 11/18/2022] Open
Abstract
Streptococcus pneumoniae colonization is a precursor to pneumococcal disease. Although children with a tracheostomy have an increased risk of pneumococcal pneumonia, the pneumococci colonizing their lower airways remain largely uncharacterized. We sought to compare lower respiratory tract isolates colonizing tracheostomy patients and a convenience sample of isolates from individuals intubated for acute conditions. We collected pneumococcal isolates from the lower respiratory tract of 27 patients with a tracheostomy and 42 patients intubated for acute conditions. We compared the penicillin susceptibility, rates of co-colonization, genetic background, and serotype of isolates colonizing these patient populations. Isolates from both groups showed high genetic diversity. Forty multi-locus sequence types and 20 serotypes were identified. There was no significant difference in serotype distribution, co-colonization rates, vaccine coverage, or non-susceptibility to penicillin among pneumococcal isolates from the two groups. Colonization of the lower airways with non-vaccine serotypes 15B/C, 23B and 35B was noted for the first time in patients with tracheostomies and supports recently observed increases in nasopharyngeal colonization and disease due to these serotypes.
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Affiliation(s)
- Guliz Erdem
- College of Medicine, The Ohio State University, and Nationwide Children’s Hospital, Columbus, Ohio, United States of America
- * E-mail: (SJK); (GE)
| | - Anirudh K. Singh
- Center for Microbial Pathogenesis, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Anthony J. Brusnahan
- Center for Microbial Pathogenesis, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Amber N. Moore
- Center for Microbial Pathogenesis, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - William J. Barson
- College of Medicine, The Ohio State University, and Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Amy Leber
- Department of Pathology and Laboratory Medicine, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
| | - Jorge E. Vidal
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Serkan Atici
- Department of Pediatrics, Marmara University School of Medicine, Istanbul, Turkey
| | - Samantha J. King
- College of Medicine, The Ohio State University, and Nationwide Children’s Hospital, Columbus, Ohio, United States of America
- Center for Microbial Pathogenesis, Nationwide Children’s Hospital, Columbus, Ohio, United States of America
- * E-mail: (SJK); (GE)
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