A chronic lack of investment in development of better tests has left clinicians blind and allows deadly viruses to spread unchecked.

At the heart of the Ebola outbreak in the Democratic Republic of Congo, health care workers are racing to open new treatment centers and ramp up testing. But after years of war, the deadly virus is just one of many challenges they’re facing.

The court further delayed the Trump administration’s proposed quarantine unit for Americans exposed to the virus. The plan has sparked angry protests in Kenya.