Extensively drug-resistant Haemophilus influenzae isolated in Geneva, Switzerland

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.