A dramatic drop in mortality for youngsters under age 5 has been one of the great accomplishments in global health. But estimates suggest that in 2025 child deaths will go up.

One of the crowning achievements in global health is at risk of coming undone.

Between 2000 and 2020, the number of children who die before they hit their 5th birthday dropped by half — from nearly 10 million deaths a year to under 5 million deaths a year.