In Mozambique, authorities in the flood-ravaged city of Beira have confirmed over 500 cases of cholera after Cyclone Idai left hundreds of thousands of people homeless and living in unsanitary conditions. Cholera can spread rapidly if left untreated, and in the worst cases can result in death. The World Health Organization says 900,000 doses of cholera vaccine are arriving in the region today. The death toll from the cyclone has surpassed 500 people in Mozambique, as well as at least 250 people in Zimbabwe and over 50 in Malawi.