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Lozada J, Gómez JO, Serrano-Mayorga CC, Viñán Garcés AE, Enciso V, Mendez-Castillo L, Acosta-González A, Bustos IG, Fuentes YV, Ibáñez-Prada ED, Crispin AM, Delgado-Cañaveral MC, Morales Celis LM, Jaimes D, Turner P, Reyes LF. Streptococcus pneumoniae as a colonizing agent of the Nasopharynx - Oropharynx in adults: A systematic review and meta-analysis. Vaccine 2024; 42:2747-2757. [PMID: 38514352 DOI: 10.1016/j.vaccine.2024.03.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/15/2024] [Accepted: 03/17/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND Streptococcus pneumoniae (Spn) is a commensal pathogen that usually colonizes the upper respiratory tract of children. Likewise, Spn colonization has been considered a critical factor in the development of pneumococcal invasive disease. However, Spn prevalence in adults remains unclear. This study performs a systematic review and meta-analysis to explore the prevalence of Spn Nasopharynx - Oropharynx Colonization (NOC) in adults. METHODS A Systematic review of scientific databases was utilized to identify eligible studies that follow strict selection criteria. Subsequently, a meta-analysis was conducted to establish NOC prevalence in adults (≥18 years old). The heterogeneity and sensitivity analyses were assessed using the microorganism identification technique, sample type, and age subgroups. RESULTS Initial selection includes 69 studies, with 37 selected for the meta-analysis, involving 23,724 individuals. The overall prevalence (95 % CI) of Spn NOC among adults was 6 % (5-9). The subgroup analysis revealed that young adults (YA), 18-64 years old, had a prevalence of 10 %, whereas older adults (OA), ≥65 years old, had a prevalence of 2 %. The identification of Spn NOC may vary depending on the method of diagnosis used. High heterogeneity (I2 > 90 %) was observed but diminished to 70 % when the analysis was restricted to oropharyngeal swabs as an identification method. Furthermore, heterogeneity decreased to 58 % when exclusively employing traditional culture as the identification method. CONCLUSIONS This study found a low prevalence of Spn NOC in adults. Notably, the prevalence of Spn NOC was higher in younger adults than in older adults. It is essential to highlight a significant heterogeneity among studies, which indicates there is no standardized method of Spn NOC identification.
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Affiliation(s)
- Julián Lozada
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia; Bioscience PhD, Engineering School, Universidad de La Sabana, Chía, Colombia
| | - Juan Olivella Gómez
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia; Unisabana Center for Translational Science, Universidad de La Sabana, Chía, Colombia
| | - Cristian C Serrano-Mayorga
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia; Bioscience PhD, Engineering School, Universidad de La Sabana, Chía, Colombia; Unisabana Center for Translational Science, Universidad de La Sabana, Chía, Colombia
| | - André Emilio Viñán Garcés
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia; Unisabana Center for Translational Science, Universidad de La Sabana, Chía, Colombia
| | - Valeria Enciso
- School of Medicine, Universidad de La Sabana, Chía, Colombia
| | | | - Alejandro Acosta-González
- Bioscience PhD, Engineering School, Universidad de La Sabana, Chía, Colombia; Unisabana Center for Translational Science, Universidad de La Sabana, Chía, Colombia
| | - Ingrid G Bustos
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Bioscience PhD, Engineering School, Universidad de La Sabana, Chía, Colombia
| | - Yuli V Fuentes
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia
| | - Elsa D Ibáñez-Prada
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia; Unisabana Center for Translational Science, Universidad de La Sabana, Chía, Colombia
| | - Ana M Crispin
- Unisabana Center for Translational Science, Universidad de La Sabana, Chía, Colombia
| | | | | | - Diego Jaimes
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia
| | - Paul Turner
- Cambodia-Oxford Medical Research Unit, Angkor Hospital for Children, Siem Reap, Cambodia; Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Luis Felipe Reyes
- School of Medicine, Universidad de La Sabana, Chía, Colombia; Clínica Universidad de La Sabana, Chía, Colombia; Pandemic Sciences Institute, University of Oxford, Oxford, UK.
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