Dr Mekkia Mahdi works at the health clinic in Aslam, an impoverished town in the north west of Yemen.
It is only 60km (37 miles) from the border with Saudi Arabia, but is on the front line of Yemen’s health emergency.
The BBC has spend time with her on the morning rounds, as she checks on the progress of her vulnerable patients.
Produced by Lyse Doucet and Tony Brown
Shoot and edit by Dave Bull
Read more: Yemen crisis: Why is there a war?