After spending his career as a global health medical doctor, professor and advisor to organizations like WHO and UNICEF, Hans Rosling founded the Gapminder Foundation with his son and daughter-in-law. They wrote the book, Factfulness (you need to read this book) which offered a much more useful alternative to the "developed" vs "developing" labels. While each country has unique successes and challenges, these four levels describe the general environment healthcare is delivered in to allow us to design accordingly.
Extreme poverty: Your only for of transportation is your feet and water is an hour's walk away to fill your bucket. You cook with fire and can't afford even basic antibiotics. Food is basic porridge and you are earning $1-$2/day.
1 Billion people live like this today. How can we improve their access to healthcare?
Your family can afford a bike, so only 1 person has to ride to fill the buckets with water. You have a gas stove and can raise chickens to eat eggs. You can buy your children sandals and send them to school. You have electricity often enough that you have a lightbulb, but it is not reliable enough to buy a freezer. You earn $2-$8/day.
3 Billion people live like this today. How can we improve their access to healthcare?