Yemen is an easy example. [2] "As of October 2018, there have been more than 1.2 million cases reported, and more than 2,500 people—58% children—have died in the Yemen cholera outbreak, which is the worst epidemic in recorded history and was, according to the United Nations (UN), the worst humanitarian crisis in the world."

These numbers are also very conservative estimates, given the state of siege.

[1] https://en.wikipedia.org/wiki/Saudi_Arabian-led_intervention...

[2] https://en.wikipedia.org/wiki/2016%E2%80%9319_Yemen_cholera_...