What is Ebola?

The highly virulent Ebola virus has seen a few major outbreaks since it first appeared in 1976 — with the worst epidemic occurring in 2014. We’ve explored the Ebola virus several times on Ask a Scientist over the past year, but what exactly is it, and what do we know about it?

Alex Gendler details what Ebola is and why it’s so hard to study in this excellent video from TED-Ed.