The Disaster Cycle: Drought, The Flood, Then Disease and No Time To Recover

When devastating floods swept through Southern Africa in December 2025, killing at least 280 people and affecting nearly one million others, communities weren't just facing bad weather.  They were trapped in a catastrophic cycle with no time to breathe (Climate Change Amplifies Southern Africa Floods That Killed 280 and Displaced Nearly One Million People, Envirolink, 2026).

Richard Munang with the UN Environment Programme warned, "For southern Mozambique, the transition from drought to floods is more than just bad weather it is a compound crisis that multiplies human suffering."

This is a pattern that is now repeating across Uganda, Southern Africa, and vulnerable regions worldwide.

From drought to deluge

The cycle is brutal in its predictability. Communities still recovering from the severe 2023/2024 drought suddenly faced unprecedented rainfall when more than an entire year's worth fell in just 10 days across Southern Africa. Crops had failed during the drought. Savings were depleted. Health services were already stretched thin.

"Before they could stand up from the drought, the flood knocked them down again," Munang explained.

In Uganda, the pattern mirrors this global crisis. Research shows that drought strikes every 6 years and extreme rainfall every 12-18 years, but climate change is compressing these cycles, creating overlapping disasters. Agricultural losses from droughts and floods affect nearly 4.5 million Ugandans annually, contributing to USD 20 million in annual losses.

Rise in diseases

The third wave of the disaster cycle proves most deadly: disease outbreaks. Over 178,000 cholera cases were confirmed across Eastern and Southern Africa between January 2024 and March 2025, resulting in nearly 2,900 deaths, many of them children.

"Access to safe water is vital for the survival and development of our children," said Etleva Kadilli, UNICEF Regional Director for Eastern and Southern Africa. Yet floods destroy water infrastructure, contaminate sources, and force communities into overcrowded displacement camps where cholera thrives.

In Mozambique, already battling a cholera outbreak in northern provinces, the January 2026 floods exacerbated the epidemic. WHO reports warn that overcrowding in displacement sites, combined with poor hygiene and limited safe water access, creates perfect conditions for waterborne disease transmission.

Uganda faces similar threats. The WHO African Region has confirmed cholera affected 14 African countries in 2024, including Uganda, with climate-related flooding accelerating transmission.

Photo by Tobias Rademacher on Unsplash

Climate change: The cycle accelerator

Scientists have found that climate change increased rainfall intensity by approximately 40% during the Southern Africa floods. Rising temperatures are altering the hydrological cycle, leading to more extreme weather events, with droughts and floods occurring closer together.

Recent analysis shows East Africa has experienced consistently higher temperatures in recent years, contributing to shifts in precipitation patterns that result in these compound disasters.

Breaking the cycle

The solution requires integrated approaches. Climate-resilient health systems must include emergency water supplies, mobile clinics in flood zones, and pre-positioned medical supplies. The Population-Health-Environment (PHE) modeloffers a framework linking reproductive health services, environmental conservation, and disaster preparedness.

But time is running out. As Dr. Abdourahmane Diallo of WHO Africa warned, "Climate change is worsening these risks through flooding and sand displacements." Without urgent action to break the drought-flood-disease cycle, millions more will remain trapped in this devastating pattern not only in Uganda but also across Africa and around the world.