A solution may sound simple — just train more medical personnel — but it’s more complicated than that.

A lack of funding means the resources to train, employ, and adequately support staff aren’t there.

Then there are considerations around mental health and physical security, as well as the challenges that many health workers face in trying to reach “last mile” populations in places such as refugee and displaced persons camps, rural areas, and fragile and conflict-affected states. Over 70 million people are currently displaced.