So how did these West African—but not Ebola-epidemic—nations control Ebola? Generally, they didn't use travel bans. Instead, they relied on strong public-health departments to find and monitor the people patients contacted. In addition, they quickly identified, and reacted to, the first Ebola victims within their borders after they got sick. In contrast, those countries with Ebola epidemics now responded slowly, at first, in part because they didn't have the funding and infrastructure.