The Trump administration has imposed a U.S. entry ban on foreigners who’ve traveled in the Democratic Republic of the Congo, Uganda or South Sudan in the past three weeks. The order came as the World Health Organization said an outbreak of Ebola virus in the DRC and Uganda has reached 500 suspected cases and 130 suspected deaths, with those numbers expected to rise. This is the WHO’s Director-General Tedros Adhanom Ghebreyesus.

Tedros Adhanom Ghebreyesus: “I’m deeply concerned about the scale and speed of the epidemic.”

The WHO says the DRC will open three Ebola treatment centers in the eastern Ituri province, where the outbreak began. Meanwhile, the Centers for Disease Control says a U.S. doctor tested positive for Ebola after working with a medical missionary group in Congo. Dr. Peter Stafford was exposed to the virus while treating patients in the capital of Ituri province. He’s been evacuated to Germany for treatment. Click here to see our interview with Dr. Craig Spencer, who was positive for Ebola virus about a decade ago but now is critiquing U.S. policy on Ebola and other viruses.