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Updated: May 25, 2026

Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
Published on: September 25, 2014
The relationship between pneumococcal serotypes and antibiotic resistance
Jae-Hoon Song1, Ron Dagan, Keith P Klugman
1Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong Gangnam-gu, Seoul, Republic of Korea. songjh@skku.edu
Abstract:
Streptococcus pneumoniae (SP) causes significant burden of disease, including invasive pneumococcal disease and noninvasive diseases such as pneumonia and acute otitis media. SP has at least 93 different capsular serotypes, with the various serotypes having different propensities for producing disease or developing antibiotic resistance. An increase in the prevalence of antibiotic-resistant SP serotypes has been observed globally. The objective of this paper was to examine the relationship between antibiotic resistance and SP serotypes, with a primary focus on studies published in the past 10 years. Changing trends in antibiotic resistance and serotype distribution during this time, including those before and after the introduction of 7-valent pneumococcal conjugate vaccine (PCV7), were analyzed. Factors that influence the prevalence of antibiotic-resistant serotypes include antibiotic selection pressure, the use of PCV7, and the emergence and spread of antibiotic-resistant clones. The emergence of multidrug resistant serotype 19A is of particular concern. Antibiotic-resistant SP is a global problem that must be addressed through multiple strategies, including national vaccination programs, antibiotic control programs, and ongoing surveillance.
Insights
Antibiotic-resistant Streptococcus pneumoniae (SP) serotypes are a growing global concern. This study examines trends in SP antibiotic resistance and serotype distribution over the past decade, highlighting the need for vaccination and surveillance.
Area of Science:
- Microbiology
- Epidemiology
- Public Health
Background:
- Streptococcus pneumoniae (SP) causes significant disease burden globally.
- SP exhibits over 93 serotypes, varying in disease potential and antibiotic resistance.
- Increasing global prevalence of antibiotic-resistant SP serotypes is a major public health challenge.
Purpose of the Study:
- To investigate the relationship between antibiotic resistance and SP serotypes.
- To analyze trends in antibiotic resistance and serotype distribution over the last 10 years.
- To evaluate the impact of factors like PCV7 introduction on resistance patterns.
Main Methods:
- Systematic review of studies published within the past 10 years.
- Analysis of antibiotic resistance trends and serotype distribution.
- Examination of factors influencing the prevalence of resistant SP serotypes.
Main Results:
- Significant changes in antibiotic resistance and serotype distribution observed over the decade.
- The introduction of PCV7 has influenced serotype prevalence and resistance patterns.
- Multidrug-resistant serotype 19A has emerged as a particular concern.
Conclusions:
- Antibiotic-resistant SP is a critical global health issue.
- Effective strategies include vaccination programs, antibiotic stewardship, and continuous surveillance.
- Addressing multidrug-resistant strains like 19A is essential for public health protection.
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