Related Experiment Video
Updated: May 18, 2026
07:47
Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
Sampling methods for the study of pneumococcal carriage: a systematic review.
R A Gladstone1, J M Jefferies, S N Faust
1Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, UK.
Vaccine
|September 18, 2012
Summary
Accurate Streptococcus pneumoniae sampling is crucial for vaccine impact studies. However, variations in collection and storage methods persist, potentially skewing carriage estimates and hindering global comparisons.
Area of Science:
- Microbiology
- Epidemiology
- Public Health
Background:
- Streptococcus pneumoniae is a significant global pathogen, necessitating accurate carriage surveillance.
- Standardized sampling methods are vital for reliable pneumococcal disease control and vaccine efficacy evaluation.
- Variability in sampling protocols complicates inter-laboratory comparisons and data interpretation.
Purpose of the Study:
- To review sampling variables for Streptococcus pneumoniae carriage detection.
- To compare methods used in studies post-World Health Organization (WHO) standard publication.
- To identify persistent inconsistencies in pneumococcal sampling protocols.
Main Methods:
- Systematic literature search of PubMed for studies published after the WHO standard method (February 2003).
- Analysis of sampling and storage protocols for Streptococcus pneumoniae carriage.
- Review focused on nasopharyngeal sampling, swab types, and transport media.
Main Results:
- Despite the WHO standard, significant variations in sampling protocols persist.
- Nasopharyngeal sampling is common, but swab and transport media choices differ widely.
- Insufficient data exists to support the optimal sensitivity of any single standard method.
Conclusions:
- Inconsistent adoption of WHO guidelines and logistical challenges affect pneumococcal carriage estimates.
- Continued protocol variations may compromise the accuracy of vaccine impact assessments.
- Further comparative studies are needed to optimize sampling methods for improved pneumococcal disease control.
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