A groundbreaking housing project in Tanzania, known as Star Homes, has demonstrated a significant reduction in the incidence of malaria, diarrheal infections, and acute respiratory infections among children. The initiative, which began as a collaboration between public health advocate Salum Mshamu, architect Jakob Brandtberg Knudsen, and Professor Lorenz von Seidlein of the Mahidol Oxford Tropical Medicine Research Unit, focused on redesigning homes to mitigate disease transmission.
Mshamu, who initially trained as a nurse, pursued advanced studies at Lund University in Sweden before undertaking doctoral research at the University of Oxford. His collaboration with Knudsen and von Seidlein led to the development of the Star Homes concept, aiming to combat diseases that claim millions of young lives annually in low- and middle-income countries. Diarrheal infections alone cause nearly 2 million childhood deaths each year, while respiratory infections account for approximately 350,000 childhood deaths annually in sub-Saharan Africa.
The Star Homes project involved building 110 houses across more than 50 villages. These homes differ in appearance from traditional rammed earth structures prevalent in the region, featuring concrete floors and metal roofs. The design choices were deliberate: traditional earthen houses can become too hot at night, making it difficult for inhabitants to use mosquito nets effectively, and often suffer from poor sanitation and ventilation, thereby increasing disease risks.
Key innovations in the Star Homes design include the installation of an air-permeable mesh around the entire structure. This feature helps reduce internal temperatures while maintaining adequate airflow, which in turn lowers indoor carbon dioxide levels that attract malaria-carrying mosquitoes. The sleeping areas were elevated to deter insects that prefer to remain close to the ground. Additionally, the houses are equipped with self-contained water filtration systems, latrines, and solar-powered lighting. A ventilated kitchen space includes lockable storage to prevent pest contamination of food.
Results from a randomized controlled trial published in April 2026, involving over 600 families, showed striking improvements. Children residing in Star Homes experienced a 44% reduction in malaria risk, 30% fewer diarrheal infections, and an 18% decrease in acute respiratory infections compared to children in traditional housing. Mshamu expressed hope that these findings will inspire similar adaptations across the continent, especially in light of growing challenges posed by climate change. He emphasized the need to involve policymakers and explore scalable solutions, such as mortgage programs, to facilitate wider adoption of the design.