Scientific article
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Extensively drug-resistant Haemophilus influenzae isolated in Geneva, Switzerland

Published inEuropean journal of clinical microbiology & infectious diseases, vol. 44, no. 5, p. 1273-1277
Publication date2025-05
First online date2025-03-06
Abstract

The emergence of multi-drug resistant (MDR) and even extensively drug-resistant (XDR) strains among H. influenzae was observed in some Asian countries. Herein, we reported the first XDR H. influenzae isolated in Geneva, Switzerland. This strain was isolated in a good-quality sputum sample from a 63 year-old male patient. There was no respiratory infection diagnosed at that time. The strain was non-typeable and pan-β-lactam resistant. According to whole genome sequencing analysis it belongs to sequence type 159 and the ST-107 clonal complex. It was classified into group III + regarding the amino acid substitutions identified in the transpeptidase domain of PBP3.

Keywords
  • Haemophilus influenzae
  • Ceftriaxone resistance
  • Extensively drug resistant
  • Penicillin-binding protein 3 amino acid substitutions
  • Humans
  • Switzerland
  • Male
  • Haemophilus influenzae / drug effects
  • Haemophilus influenzae / isolation & purification
  • Haemophilus influenzae / genetics
  • Haemophilus influenzae / classification
  • Middle Aged
  • Haemophilus Infections / microbiology
  • Anti-Bacterial Agents / pharmacology
  • Drug Resistance, Multiple, Bacterial
  • Whole Genome Sequencing
  • Microbial Sensitivity Tests
  • Sputum / microbiology
Citation (ISO format)
CHERKAOUI, Abdessalam et al. Extensively drug-resistant Haemophilus influenzae isolated in Geneva, Switzerland. In: European journal of clinical microbiology & infectious diseases, 2025, vol. 44, n° 5, p. 1273–1277. doi: 10.1007/s10096-025-05093-w
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Article (Published version)
Identifiers
Journal ISSN0934-9723
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245downloads

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