Emergence of ciprofloxacin-resistant B from asymptomatic carriers during an outbreak in Peru, 2017.

Asymptomatic carriers are a likely source of transmission of to close contacts who are placed at a higher risk for invasive meningococcal disease (IMD). Although ciprofloxacin-resistance is rare, there have been an increase in the reports of resistant isolates mainly in patients diagnosed with IMD, and little is known about the ciprofloxacin-resistance in the carrier populations. We performed a pharyngeal carriage study during a 2017 military setting outbreak in Peru, caused by a ciprofloxacin-resistant B.