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In vitro evaluation of the activity of pairwise combinations of zoliflodacin, gepotidacin, and ciprofloxacin against Neisseria gonorrhoeae

Bowcutt, B. A.; Mukherjee, A. A.; Palace, S. G.; Grad, Y. H.

2026-07-08 microbiology
10.64898/2026.07.07.737061 bioRxiv
Show abstract

Two new antibiotics, zoliflodacin and gepotidacin, were recently approved for the treatment of urogenital gonorrhea. While combination therapy could, in principle, delay the emergence and spread of resistance, doing so depends on the absence of antagonism between the co-administered drugs. Using in vitro checkerboard testing, we observed no evidence of antagonism for all pairwise combinations of zoliflodacin, gepotidacin, and ciprofloxacin, including in strains with elevated ciprofloxacin MICs.

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