In the community-wide prophylaxis arm, after notification of the first case, a study nurse will visit the village within 24 hours and meet with community leaders. During this visit, a community-wide distribution of ciprofloxacin will be arranged within 72 hours of the initial case presentation at the HC. These distributions will be organized with local authorities, and they will take place after a series of community meetings explaining the study and the distribution to villagers. In this arm, distribution of ciprofloxacin will occur only once, after the first notified case-patient in a village.