Antimicrobial resistance in Streptococcus pneumoniae, Taiwan
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Updated: Sep 28, 2026

Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
Published on: September 25, 2014
1National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan. hsporen@ha.mc.ntu.edu.tw
Abstract:
Taiwan has one of the highest levels of antibiotic-resistant pneumococcus in the world. Pneumococcal isolates not susceptible to penicillin first appeared in Taiwan in 1986; in 1995 an increase in the prevalence of nonsusceptibility to penicillins, extended-spectrum cephalosporins, trimethoprim-sulfamethoxazole, and macrolides as well as multidrug resistance began to be recognized. With the persistence of antibiotic selective pressure, resistance in some antibiotics reached a high plateau (beta-lactam antibiotics) or continued to increase (macrolides), while novel resistance (fluoroquinolones) emerged in the last 3 years. Widespread distribution of some novel resistant 23F and 19F clones (and the international epidemic of 23F clones) contributes further to the rapid increase of resistance. Because Streptococcus pneumoniae is a major pathogen that causes community-acquired lower respiratory tract infections and meningitis in adults and children, antibiotic-resistance in this organism is a serious problem.
Insights
Antibiotic resistance in Streptococcus pneumoniae is a significant global health concern. Taiwan faces high rates of drug-resistant pneumococcus, impacting treatment of common infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Antimicrobial Resistance
Background:
- Taiwan exhibits high rates of antibiotic-resistant Streptococcus pneumoniae globally.
- Resistance to penicillin was first observed in Taiwan in 1986.
- By 1995, increased resistance to multiple antibiotics and multidrug resistance emerged.
Purpose of the Study:
- To document the trends and characteristics of antibiotic resistance in Streptococcus pneumoniae in Taiwan.
- To highlight the emergence of novel resistance patterns and the impact of specific clones.
Main Methods:
- Surveillance of pneumococcal isolates.
- Monitoring of antibiotic susceptibility patterns.
- Tracking of specific resistant clones (e.g., 23F, 19F).
Main Results:
- Sustained high-level resistance to beta-lactam antibiotics.
- Continued increase in macrolide resistance.
- Emergence of fluoroquinolone resistance in recent years.
- Widespread distribution of novel resistant 23F and 19F clones.
Conclusions:
- Antibiotic selective pressure drives increasing resistance in Streptococcus pneumoniae.
- The spread of specific resistant clones exacerbates the resistance problem.
- Antibiotic resistance in this key pathogen poses a serious threat to public health, particularly for community-acquired infections and meningitis.
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