We report on an outbreak of nongroupable Neisseria meningitidis-associated urethritis, primarily among men who have sex with men in southern Vietnam. Nearly 50% of N. meningitidis isolates were resistant to ciprofloxacin. This emerging pathogen should be considered in the differential diagnosis and management of urethritis.
Keywords: Neisseria meningitidis; Vietnam; antimicrobial resistance; bacteria; men who have sex with men; sexually transmitted infections; urethritis.