Informal settlements are crowded places where entire families often share a single room.
Kibera, located within the Kenyan capital of Nairobi, is one such place.
Residents told BBC Africa that they are worried about insufficient water, sanitation, and hygiene, and about the virus spreading within the community.
"We are being told we must wash our hands for at least 20 seconds every time we touch things. That water is too much. We don't have money."
In informal settlements like Kenya's Kibera, where millions of people live at close quarters, many fear self-isolation is not possible. pic.twitter.com/MOsStIdjSu
— BBC News Africa (@BBCAfrica) March 23, 2020