Epidemics are often associated with natural disasters, most notably floods or periods of heavy rain, when sanitation systems overflow and contaminate water sources and the environment. Cyclone Idai struck central Mozambique in March 2019. A second cyclone hit the northern region in late April. Both storms resulted in widespread flooding and contamination of water supplies. During the week following the first cyclone, officials in Mozambique declared a cholera outbreak, with more than 6,000 cases reported by the beginning of May 2019 (Reliefweb 2019).
From collection: Sanitation and Wastewater Atlas of Africa - Human Health