BANDA ACEH, Indonesia — Floods and landslides from a cyclone that tore across Indonesia’s Sumatra island have killed at least 940 people and left 276 missing in the past two weeks, as the only regional hospital in Aceh province struggles to keep pace with tens of thousands of sick and injured survivors, Dec. 7, 2025.
Aceh floods reveal deadly cracks in disaster healthcare.
The Aceh floods were triggered when Cyclone Senyar struck northern Sumatra on Nov. 25, sending torrents of mud through the countryside like runaway freight trains that flattened bridges, buried villages, and sliced apart power and phone lines across three provinces. Government figures record 31 hospitals and 156 smaller health centres in Aceh, North Sumatra and West Sumatra as damaged or inaccessible, while local officials estimate that at least seven hospitals and more than 136 rural clinics in just one province of Aceh are now out of commission, sending patients to overcrowded classrooms or mosque courtyards for treatment.
Mud still coats stretchers and monitors inside the Aceh Tamiang Regional Hospital, where staff sort through ruined equipment and stray syringes in dark corridors. The facility was nearly paralysed because of a lack of medicine after floodwaters inundated its intensive care unit and ruined baby ventilators, resulting in the death of one newborn, said one nurse. “These labourers, they never understand the meaning of tired,” said Ayu Wahyuni Putri, who had given birth days before the water flooded through the building. “This is an extraordinary disaster. Everything is destroyed.”
As waters from the Aceh floods recede into stagnant, brown pools, doctors are becoming more concerned about disease than injuries. The Health Ministry has recorded increases in cases of diarrhoea, fever, muscle pain and respiratory infections, associated with overcrowded shelters and contaminated wells, and warned that the “post-disaster” situation in Aceh was leading to outbreaks that could spread beyond the worst-hit districts. A new analysis by the Indonesian Observer referred to ministry data that dozens of injuries, cases of acute respiratory infection and diarrhoea have begun appearing in Aceh and nearby provinces already, highlighting fears that without clean water, sanitation or vaccines, the floods in Aceh “could spawn an enduring public health crisis”.
In Jakarta, officials say the health system is coping. The Health Ministry says it has dispatched emergency teams, installed satellite internet to keep clinics open, and sent oxygen concentrators, medicines, water-quality kits and body bags to disaster areas in Aceh, North Sumatra and West Sumatra, following a recent briefing by state news agency Antara. Yet ruined roads and collapsed bridges have left many of the supplies mired far from remote hamlets, as the military rushes in temporary Bailey bridges and field medical centres to restore some basic access for ambulances and relief convoys.
On the ground, survivors say they cannot afford to be held up by red tape. In Aceh Tamiang, people have reported walking for an hour over logs to reach an aid centre where volunteers provide clean clothes and drinking water, in a similar account compiled by Reuters from the district and other reports from neighbouring villages. Others told reporters that they had managed to survive for a week by boiling floodwater, as the Aceh floods are exacerbating hunger and malnutrition in already impoverished communities that have been left isolated from markets and regular health services.
Not much of what remains today is new to Aceh, disaster researchers say. In the wake of the 2004 Indian Ocean tsunami, post-tsunami relief reports from Aceh and a PLOS Medicine review on flooding and health have warned that diarrhoeal diseases, malaria, and leptospirosis take off when water systems are disrupted, and sanitation breaks down. A pair of years after that, in 2006, floods in Aceh’s Tamiang district swept away villages again and left tens of tens of thousands homeless; an Oxfam report estimated as many as 235,000 people were displaced by earlier flooding in Aceh, with officials then — like now — blaming a mix of extreme rain and forest clearance for the devastation.
Today, the Aceh floods are striking a warmer, more populous Sumatra, intensifying those vulnerabilities. Humanitarian groups, citing a joint situation report by the Indonesia Humanitarian Coordination Platform, say that more than three million people across the island have been affected — over one million of whom are evacuees — and that there are acute shortages of food and clean water in isolated valleys. For families who have been left sleeping on classroom floors or under roadside tarpaulins beside sodden streets, the priorities are clear: restore clean water, reopen clinics, and prevent the Aceh floods from becoming Indonesia’s next preventable public health disaster.
