An older Indonesian couple, Sinyo and Henny Kawilarang, tested positive for the coronavirus in early July. But with only mild symptoms, they decided to self-isolate at home amid a surge in cases of the highly infectious delta variant in Indonesia.

The residents of Tangerang, in the suburbs of Jakarta, made the decision based on a doctor's recommendation. It was difficult for them to find hospitals to admit them for treatment, amid bed occupancy rates exceeding 90% in many health facilities.

"We had only fever. Since we had both been vaccinated, we expected that we would be okay after a week," said Henny, the 67-year-old wife.