Ebola vaccine cuts death rates in half — even if it's given after infection

Janine Kibwana, Ebola survivor and mother of five, sits in her living room in Beni, Democratic Republic of the Congo. Researchers studying the DRC's most recent Ebola outbreak say that a new vaccine can dramatically reduce the risk of dying from the disease. (John Wessels/AFP via Getty Images)

There's welcome news in the battle against the Ebola virus, an infectious disease that for years had almost no treatments or remedies.

Outbreaks of the deadly Ebola virus flare up in parts of Africa almost every year, and they're vicious.