When Daniel Khan Mbuh died in a hospital in northern Cameroon, the hospital declared the cause of death to be Covid-19 — then released the body to the family instead of arranging for a safe burial, his daughter Stella said.

Ms. Mbuh said she was told the house where she had been caring for her father in the city of Bamenda would be disinfected. Nobody came. When she tried to get tested, the hospital refused, saying there were not enough test kits. And she was never advised to self-isolate, so she simply imposed her own two-week quarantine on herself and her siblings.

“They said they are following contacts,” Ms. Mbuh said of health officials, “but I am one of the contacts. And I am not being followed.”

The spread of the new coronavirus is now accelerating in many countries in Africa, where medical resources are stretched, rumors are rife and efforts to stop the pandemic are sometimes haphazard.