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Updated: Jun 21, 2026

Growing a Cystic Fibrosis-Relevant Polymicrobial Biofilm to Probe Community Phenotypes
Published on: April 19, 2024
[Cefditoren and community-acquired lower respiratory tract infections (corrected)]
1Servicio de Enfermedades Infecciosas, Hospital Central de la Defensa "Gómez Ulla" Madrid. josebarberan@teleline.es
Abstract:
Cefditoren is a third-generation oral cephalosporin with good activity against respiratory tract pathogens, including penicillin-intermediate and -resistant strains of S. pneumoniae, and beta-lactamase producing strains of H. influenzae and M. catarrhalis. Its bacterial activity, measured by minimum inhibitory concentration (MIC), is similar or superior to that of many other commonly used antibiotics (penicillins, cephalosporins and fluoroquinolones). Considering the target attainment of T > MIC of >or= 40% a more reliable predictor of clinical and microbiologic outcomes, cefditoren covers strains of S. pneumoniae with MIC values
Insights
Cefditoren, an oral cephalosporin, effectively treats respiratory infections caused by common pathogens like Streptococcus pneumoniae and Haemophilus influenzae. It demonstrates high bacteriologic response rates, making it a reliable option for acute exacerbations of chronic bronchitis and community-acquired pneumonia.
Area of Science:
- Pharmacology
- Microbiology
- Infectious Diseases
Background:
- Cefditoren is a third-generation oral cephalosporin antibiotic.
- It exhibits activity against key respiratory tract pathogens, including resistant strains.
Purpose of the Study:
- To evaluate the efficacy of cefditoren against respiratory pathogens.
- To assess its suitability for treating lower respiratory tract infections.
Main Methods:
- Minimum inhibitory concentration (MIC) was used to measure bacterial activity.
- Target attainment (T > MIC) was considered for clinical outcomes.
- Bacteriologic response rates were analyzed for key pathogens.
Main Results:
- Cefditoren shows potent activity against S. pneumoniae and H. influenzae, including resistant strains.
- High bacteriologic response rates were observed (approx. 85% for H. influenzae, 90% for S. pneumoniae).
- It is effective for switch therapy from intravenous cephalosporins.
Conclusions:
- Cefditoren is a reliable oral option for treating acute exacerbations of chronic bronchitis and community-acquired pneumonia.
- Its pharmacokinetic profile supports its use in respiratory tract infections.
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