Should you worry about the Ebola outbreak? Here’s what the numbers tell us

collected a sample for testing, the officials said.

WHO says there was a “critical four-week detection gap” between when the first known patient became ill in April and when the disease was identified, allowing Ebola to spread unchecked.

WHO’s Ancia said she doesn’t believe the investigation has turned up a “patient zero” for now. But she said that for continue reading …