A race against time is underway to help those affected by Cyclone Chido on the island of Mayotte and the Comoros archipelago. The authorities fear a very heavy human toll in this poorest department in France. The weather conditions and the damage caused by a cyclone, of incredible violence, complicate the deployment of relief and the sending of reinforcements is a headache. The many precarious and overcrowded habitats have not resisted and emergency services are organizing to bring water, food, hygiene products and materials to build shelters. Update with Yannick Le Bihan, Director of France Operations at Médecins du Monde.