Cyclone was one of Africa's worst weather disasters

Cyclone Idai's deadly passage through three African countries has left nearly two million people in need of assistancein a catastrophe that United Nations chief Antonio Guterres says is yet another alarm bell ringing about the dangers of climate change.

A nurse attends to displaced people suspected to have cholera in a compound in Beira, in Mozambique Source: AAP

For those who survived the storm, there are still more life-threatening problems ahead.