In Guadeloupe, the strategy for combating vector-borne diseases (dengue, chikungunya) relies on on-the-ground interventions, community outreach, and social mobilization. Exposed to other risks—natural ones this time (earthquakes, volcanoes, hurricanes, tsunamis)—this territory is attempting to build a prevention policy based precisely on social mobilization, and thus to go beyond simply informing the public. Not so simple...