Since this summer, it’s sickened almost 700 people across the U.S. and is the confirmed cause of death of two small children in just the last few weeks. But with Ebola hogging the headlines lately, Enterovirus D68 (EV-D68) may not be getting the attention it needs. However, this mysterious virus may be more of a risk to some people than Ebola. Here’s a rundown of the facts: