Journal
JOURNAL OF INFECTIOUS DISEASES
Volume 224, Issue 8, Pages 1398-1404Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/infdis/jiab091
Keywords
Neisseria gonorrhoeae; gonorrhea; Germany; antibiotic resistance; macrolide; azithromycin; genomic epidemiology; mosaic mtr locus; NG-MAST ST12302; MLST ST9363
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Funding
- German Federal Ministry of Health [ZMVI1-2516AUK700]
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The resistance of Neisseria gonorrhoeae to azithromycin within the German Gonococcal Resistance Network increased from 4.3% in 2016 to 9.2% in 2018. The rise in resistance was primarily clonal and linked to a specific mtr locus. The international spread of resistant lineages was identified as a major factor contributing to azithromycin resistance in Germany.
Within the German Gonococcal Resistance Network's (GORENET) Neisseria gonorrhoeae (NG) sample collection, azithromycin-resistant NG isolates increased from 4.3% in 2016 to 9.2% in 2018. We aim to understand this observed increase using whole genome sequencing of NG isolates combined with epidemiological and clinical data. Reduced susceptibility to azithromycin in 2018 was predominately clonal (NG multiantigen sequence typing G12302) and could mainly be attributed to the recently described mosaic-like mtr locus. Our data suggest that, together with horizontal gene transfer of resistance determinants and well-established point mutations, international spread of resistant lineages plays a major role regarding azithromycin resistance in Germany.
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