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Multiple antibiotic resistance in Streptococcus pneumoniae
1Department of Microbiology, John Radcliffe Hospital, University of Oxford, UK.
Abstract:
Streptococcus pneumoniae remains a major pathogen responsible for high morbidity and mortality in both the developed and developing world. During the last few years there has been a dramatic increase in the incidence of penicillin-resistant and multiply antibiotic-resistant pneumococci, and the emergence of isolates with high-level resistance to extended-spectrum cephalosporins. In several countries, 50-80% of pneumococcal isolates, including the great majority of isolates of the serotypes associated with disease and carriage in children, are penicillin-resistant. Penicillin-resistant pneumococci are diverse, but in several countries successful highly penicillin-resistant clones (which in most cases are resistant also to tetracycline, chloramphenicol, and cotrimoxazole, and increasingly to erythromycin) have emerged, and some of these have spread globally. The effect of antibiotic resistance on the clinical outcome of otitis media, pneumonia and meningitis, and the potential of the new conjugate vaccines for controlling pneumococcal disease, are discussed.
Insights
Antibiotic resistance in Streptococcus pneumoniae is increasing, with many strains resistant to penicillin and other drugs. New conjugate vaccines show promise for controlling pneumococcal infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Public Health
Background:
- * Streptococcus pneumoniae is a significant cause of illness and death globally.
- * Increasing resistance to penicillin and other antibiotics, including extended-spectrum cephalosporins, is a growing concern.
- * High rates of penicillin resistance (50-80%) are observed in pneumococcal isolates, particularly those linked to childhood diseases.
Purpose of the Study:
- * To discuss the impact of antibiotic resistance on pneumococcal infections.
- * To evaluate the effectiveness of new conjugate vaccines in controlling pneumococcal disease.
Main Methods:
- * Review and discussion of existing data on antibiotic resistance trends in Streptococcus pneumoniae.
- * Analysis of the clinical outcomes of otitis media, pneumonia, and meningitis caused by resistant strains.
- * Assessment of the potential role of conjugate vaccines.
Main Results:
- * Emergence and global spread of highly penicillin-resistant pneumococcal clones resistant to multiple antibiotics.
- * Significant prevalence of penicillin-resistant strains, affecting disease and carriage in children.
- * Growing resistance to erythromycin, tetracycline, chloramphenicol, and cotrimoxazole in successful clones.
Conclusions:
- * Antibiotic resistance poses a major challenge in managing Streptococcus pneumoniae infections.
- * Conjugate vaccines offer a promising strategy for the control and prevention of pneumococcal diseases.
- * Continued surveillance and development of effective treatment and prevention strategies are crucial.