The use of untreated human waste as fertilizer remains common in several districts of Rwanda, contributing to the spread of intestinal worms and other public health risks. A 2020 survey by the Rwanda Biomedical Centre (RBC) revealed that this practice is prevalent in Rutsiro (53%), Ngororero (51%), Gisagara (40%), Karongi (39%), Nyaruguru and Burera (38%), Gicumbi and Rulindo (37%), and Huye (34%). https://www.newtimes.co.rw/article/24342/news/agriculture/use-of-human-waste-as-fertilizer-what-are-the-risks