Millions of children are still dying from preventable or treatable causes, despite huge progress in child mortality rates over the past 25 years.

These are some of the key findings of a new report compiled by UN Agencies, which shows that 1 child is dying every 5 seconds.

When Ezzat El-Ferri from UN News spoke to Mark Hereward, Head of Data at the UN Children’s Fund, UNICEF, he started by asking him what the main causes of death are for children around the world.