“…Disease pathogens may also be present and exported within natural aggregates 78 . For example, snails act as the intermediate host for the liver fluke Opisthorchis viverrini in the Mekong River Basin, and Schistosomas (the causative agent of schistosomiasis or bilharzia) is widespread in many rivers and lakes across the tropics 88,89 . If these hosts can survive transport within mined aggregates, their lifespan of several years 90 suggests a potential source of spread of this disease.…”