health care workers at risk

The same Atlanta hospital that treated the first U.S. Ebola patient in August discharged its fourth patient Tuesday. All survived. Patients in isolation need extra emotional support, the team says.

Amber Vinson, who treated Thomas Eric Duncan at a Dallas hospital and has tested positive for Ebola, was on a commercial flight from Cleveland to Dallas a day before reporting symptoms.

The scientists who study humans and their cultures could help health care professionals treat people who are reasonably, desperately afraid, they argue.

Virologist Sheik Humar Khan has been hailed a hero treating Ebola in Sierra Leone. He cared for dozens of patients before testing positive for Ebola and dying of the lethal virus, late last month.