Malaria vaccine

This sounds good

A malaria vaccine has been found to protect children in Africa from serious disease for at least 18 months.

Researchers working in Mozambique found the jab cut the risk of clinical malaria by 35% and nearly halved the risk of serious malaria.

It turns out malaria is a devastating disease in much of Africa, with most of the morbidity and mortality concentrated among the young:

Malaria kills over a million people world-wide each year, and one African child every 30 seconds.

so this is potentially a huge step forward.

I always wonder about the relationship between health and economic development in poor countries. I suspect that primarily as countries become richer they get healthier, both because of improved living conditions and more money for health care, rather than vice-versa (spending more on health care leads to greater productivity), but in cases of specific severe diseases like malaria, I don't doubt the relationship goes the other way.