A month ago Cyclone Idai hit south-east Africa.

More than 240,000 buildings were damaged or destroyed.

More than 160,000 people were forced to shelter in accommodation centres and camps.

MSF responded quickly, sending emergency teams and supplies.

For an efficient response, maps are crucial. However, for this part of Africa these were inaccurate or completely missing.

Missing Maps volunteers around the world started digitising satellite imagery to fill in the gaps.

In the first month after the disaster, volunteers mapped almost 34,000 km of road and more than 330,000 buildings.

MSF had more than 1,000 staff on the ground, most of them Mozambican.

We sent 100 tonnes of supplies, delivered medical care, helped vaccinate 750,000 people against cholera, and provided water and sanitation.