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A survey of isolates of Streptococcus pneumoniae
The New Zealand Medical Journal
|March 10, 1976
Abstract:
Over eight months 130 isolates of Streptococcus pneumoniae were examined for sensitivity to penicillin, tetracycline, cephalosporin and co-trimoxozole. Except in one doubtful case all isolates were sensitive to penicillin. All were sensitive to cephalosporin. 6.9 percent is isolates were resistant to co-trimoxozole. It is suggested that penicillin remains the drug of choice in the treatment of pneumococcal infections.
Insights
Penicillin and cephalosporin effectively treat Streptococcus pneumoniae infections. However, resistance to co-trimoxazole is emerging, suggesting penicillin remains the preferred antibiotic choice for pneumococcal infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Antimicrobial Resistance
Background:
- Streptococcus pneumoniae is a leading cause of bacterial infections worldwide.
- Antibiotic resistance in S. pneumoniae poses a significant public health challenge.
- Monitoring antimicrobial susceptibility is crucial for effective treatment strategies.
Purpose of the Study:
- To evaluate the in vitro susceptibility of Streptococcus pneumoniae isolates to commonly used antibiotics.
- To determine the prevalence of resistance to penicillin, tetracycline, cephalosporin, and co-trimoxazole.
- To inform treatment guidelines for pneumococcal infections.
Main Methods:
- Collected 130 isolates of Streptococcus pneumoniae over an eight-month period.
- Performed antimicrobial susceptibility testing for penicillin, tetracycline, cephalosporin, and co-trimoxazole.
- Analyzed resistance patterns and calculated percentages of resistant isolates.
Main Results:
- All 130 isolates demonstrated sensitivity to penicillin, with one doubtful case.
- Complete sensitivity to cephalosporin was observed across all isolates.
- A resistance rate of 6.9% was recorded for co-trimoxazole.
Conclusions:
- Penicillin remains a highly effective antibiotic for treating Streptococcus pneumoniae infections.
- Cephalosporin also shows excellent activity against S. pneumoniae.
- Emerging resistance to co-trimoxazole warrants careful consideration in treatment selection.