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 spent time with her on the morning rounds, as she checked on the progress of her vulnerable patients.
Produced by Lyse Doucet and Tony Brown
Filmed by Dave Bull
Read more: Yemen crisis: Why is there a war?