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Published on: September 11, 2020
Streptococcus pneumoniae Serotype Distribution and Pneumococcal Conjugate Vaccine Serotype Coverage among Pediatric
1Department of Microbiology, College of Medicine, Howard University, Washington, DC 20059, USA. stai@howard.edu.
Insights
Pneumococcal conjugate vaccines (PCV7, PCV10, PCV13) protect against specific Streptococcus pneumoniae serotypes. This review analyzes pooled data to estimate vaccine coverage and track serotype distribution changes in Asian children.
Area of Science:
- * Pediatric Infectious Diseases
- * Vaccinology
- * Epidemiology
Background:
- * Pneumococcal infection remains a significant global health threat, particularly in young children.
- * Capsular polysaccharide-based vaccines, including 7-valent (PCV7), 10-valent (PCV10), and 13-valent (PCV13) pneumococcal conjugate vaccines, are crucial for prevention.
- * Current vaccines offer protection only against specific Streptococcus pneumoniae serotypes included in their formulations.
Purpose of the Study:
- * To provide a precise estimation of serotype coverage for PCV7, PCV10, and PCV13 vaccines in East and Southeast Asia.
- * To investigate shifts in Streptococcus pneumoniae serotype distribution among pediatric populations following the introduction of PCV7.
- * To synthesize existing English literature data published between 2000 and 2014.
Main Methods:
- * Systematic review and meta-analysis of published English literature.
- * Inclusion of studies focusing on pediatric patients in East and Southeast Asia.
- * Analysis of pooled data on Streptococcus pneumoniae serotype distribution and vaccine serotype coverage.
Main Results:
- * Analysis of pooled data from East and Southeast Asia to determine serotype coverage for PCV7, PCV10, and PCV13.
- * Examination of changes in Streptococcus pneumoniae serotype prevalence post-PCV7 implementation in pediatric populations.
- * Identification of regional variations in serotype distribution and vaccine effectiveness.
Conclusions:
- * The review aims to offer a comprehensive understanding of pneumococcal conjugate vaccine effectiveness in the target regions.
- * Findings will inform public health strategies and vaccine policy for pneumococcal disease prevention in Asian children.
- * Understanding serotype dynamics is essential for optimizing vaccination programs.
Abstract:
Pneumococcal infection is one of the leading causes of death worldwide, especially in children of developing and underdeveloped countries. Capsular polysaccharide-based vaccines are available for the prevention of this disease. A 7-valent pneumococcal conjugate vaccine (PCV7) was licensed in 2000 for use in children less than two years of age. Subsequently, to broaden the protection, 10-valent (PCV10) and 13-valent (PCV13) vaccines were licensed in 2009 and 2010, respectively. All of these conjugate vaccines elicit an immune response that only provides protection against the infection of S. pneumoniae serotypes included in the formulation. Profiles of S. pneumoniae serotype distribution and serotype coverage for both PCV7 and PCV13 have been reported in some Asian countries/territories. But the published results cannot provide conclusive information due to the difference in studied population and geographic areas. The goals of this review are to obtain an accurate estimate of serotype coverage for PCV7, PCV10, and PCV13 and examine the change in the S. pneumoniae serotype distribution after PCV7 use among pediatric patients in East and Southeast Asia through the analysis of pooled data that were published in the English literature between 2000 and 2014.
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