In early August, heavy rains caused torrential floods across many regions of Yemen, severely damaging infrastructure and inundating streets and homes.

Poor sanitation has heightened the risk of waterborne diseases. Stagnant water from the floods created breeding sites for mosquitoes, increasing the risk of malaria and dengue fever outbreaks, while reduced access to clean water led people to store available supplies in containers inside their homes, creating additional sites for vector breeding.

Yemen is among 6 countries in the Eastern Mediterranean region with areas of high malaria transmission and accounts for the majority of malaria cases in the Arabian Peninsula. The World Malaria Report estimates that more than 21 million people in Yemen are at risk of malaria. Dengue fever, which overlaps with malaria in endemic areas, is also a major public health problem.