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Updated: Aug 15, 2026

Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
Published on: September 25, 2014
Antimicrobial resistance of Streptococcus pneumoniae isolates in Athens, Greece
S Kanavaki1, E Mantadakis, S Karabela
1Microbiology Laboratory, Sotiria Chest Hospital, Athens, Greece.
Abstract:
In order to determine the current antibiotic susceptibility of Streptococcus pneumoniae strains in Greece, the present study was performed on 282 clinical isolates collected from patients at the Sotiria Chest Hospital of Athens, Greece, during the years 1997-2003. Susceptibility testing revealed that 52 (18.4%) isolates were not susceptible to penicillin, with 13.1% demonstrating intermediate and 5.3% high-level resistance. One of the penicillin-non-susceptible isolates was also resistant to cefotaxime. Comparison with results of a previous study conducted at the same hospital during the period 1992-1993 showed that penicillin resistance had increased by 4.5%. The results of this study indicate the antimicrobial susceptibility of Streptococcus pneumoniae continues to change in Greece and continuous surveillance remains important for guiding empirical antibiotic therapy.
Insights
Antibiotic resistance in Streptococcus pneumoniae is increasing in Greece. This study found 18.4% of strains were not susceptible to penicillin, highlighting the need for ongoing surveillance.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Antimicrobial Resistance
Background:
- Streptococcus pneumoniae is a major cause of bacterial infections worldwide.
- Antibiotic resistance in S. pneumoniae poses a significant public health threat.
- Monitoring antimicrobial susceptibility patterns is crucial for effective treatment strategies.
Purpose of the Study:
- To determine the current antibiotic susceptibility profile of Streptococcus pneumoniae clinical isolates in Greece.
- To assess changes in penicillin resistance rates compared to previous surveillance data.
- To inform empirical antibiotic therapy guidelines.
Main Methods:
- Analysis of 282 clinical isolates of Streptococcus pneumoniae collected from 1997-2003.
- Standard antibiotic susceptibility testing methods were employed.
- Comparison of resistance data with a prior study (1992-1993) from the same institution.
Main Results:
- 18.4% of Streptococcus pneumoniae isolates exhibited non-susceptibility to penicillin.
- Intermediate resistance was observed in 13.1% and high-level resistance in 5.3% of isolates.
- A 4.5% increase in penicillin resistance was noted compared to the 1992-1993 period.
Conclusions:
- Antimicrobial susceptibility of Streptococcus pneumoniae in Greece is dynamic and evolving.
- Continuous surveillance of antibiotic resistance is essential for guiding appropriate empirical treatment.
- The rising penicillin resistance underscores the need for updated treatment protocols.
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