MORE THAN FIVE years into the war, the public health sector in many parts of Syria is on the brink.

Medical infrastructure, particularly in opposition-held areas of the country, has been crippled by frequent, targeted attacks. Medicines and critical provisions are in short supply. Few medical workers are left. In the city of Aleppo, World Health Organization representative Elizabeth Hoff told Syria Deeply, roughly 95 percent of doctors have either fled or been detained or killed since the beginning of the crisis.