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Updated: Oct 2, 2026

Visualization of Bacterial Resistance using Fluorescent Antibiotic Probes
Published on: March 2, 2020
Highlights of the French Antimicrobial Resistance Surveillance Project. French Study Group
Y Péan1, F W Goldstein, M L Guerrier
1Clinical Microbiology Laboratory, Institut Mutualiste Montsouris, Paris, France.
Abstract:
Thirty-three French laboratories took part in a study to determine the frequency of antibiotic resistance to S. pneumoniae, H. influenzae and M. catarrhalis in different regions of the country. A total of 1317 bacterial isolates were studied. The level of resistance to penicillin among isolates of S. pneumoniae was high particularly in children with otitis media or upper respiratory tract infections. In H. influenzae isolates the level of beta-lactamase production was over 30% in all groups of patients and specimen types and in M. catarrhalis the level of beta-lactamase production was in excess of 90%. Multidrug resistance was found often among the macrolides, tetracyclines, and trimethoprim/sulfamethoxazole, and these antimicrobials should not be regarded as therapeutic alternatives to the beta-lactams.
Insights
Antibiotic resistance in Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis is high in France. Penicillin resistance in S. pneumoniae and beta-lactamase production in H. influenzae and M. catarrhalis are significant concerns.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Antimicrobial Resistance
Background:
- Antibiotic resistance poses a significant threat to public health.
- Tracking resistance patterns is crucial for effective treatment strategies.
Purpose of the Study:
- To determine the prevalence of antibiotic resistance in Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis across France.
- To assess regional variations in resistance patterns.
Main Methods:
- A nationwide study involving 33 French laboratories.
- Analysis of 1317 bacterial isolates.
- Testing resistance to various antibiotics, including penicillin and macrolides.
Main Results:
- High penicillin resistance rates were observed in S. pneumoniae, especially in pediatric respiratory infections.
- Over 30% of H. influenzae isolates showed beta-lactamase production.
- In excess of 90% of M. catarrhalis isolates exhibited beta-lactamase production.
- Multidrug resistance was common for macrolides, tetracyclines, and trimethoprim/sulfamethoxazole.
Conclusions:
- Beta-lactam antibiotics may not be effective alternatives for these pathogens.
- Current resistance levels necessitate careful antimicrobial selection.
- Further surveillance and research into resistance mechanisms are warranted.
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