Much of the infrastructure to catch and contain Ebola outbreaks early has been dismantled over the past year, as the United States abdicated its role as leader in global health, says emergency doctor Craig Spencer for Bloomberg Opinion.

Weak clinics, mistrust and insecurity strain Ebola response in eastern DR Congo-

The World Health Organization says more than 170 deaths are thought to be linked to this outbreak, with nearly 750 suspected cases so far.