Microbiological cure was achieved by 100 % ( lower 1-sided exact 95 % confidence interval [ CI ] bound , 98.5 % ) of 202 evaluable participants receiving gentamicin/azithromycin , and 99.5 % ( lower 1-sided exact 95 % CI bound , 97.6 % ) of 199 evaluable participants receiving gemifloxacin/azithromycin .