For the residents along Indonesia's Cisadane River, the coronavirus has brought not just deadly disease, but also a deluge of medical waste: a constant stream of syringes, face masks and hazmat suits floating by.

The double threat for those who depend on the 138-kilometre-long river to bathe and wash their clothes comes as Indonesia has struggled to contain COVID-19, now with the highest death toll in Southeast Asia, and in the past week almost 3,000 new infections a day.