6 Weeks With No New Cases: WHO Declares Nigeria An Ebola Free Country

The World Health Organization today, October 20th, declared Nigeria free of Ebola, It's been 42 days since the last new case. A containment victory in an outbreak that has stymied other countries’ response efforts. The milestone came around 11 a.m. local time, or 6 a.m., E.T. The outbreak has killed more than 4,500 in West Africa is remains unchecked in Liberia, Sierra Leone and Guinea, so Nigeria is by no means immune to another outbreak.

“It’s possible to control Ebola. It’s possible to defeat Ebola. We've seen it here in Nigeria,” Nigerian Minister of Health Onyebuchi Chukwu told TIME. “If any cases emerge in the future, it will be considered—by international standards—a separate outbreak. If that happens, Nigeria will be ready and able to confront it exactly as we have done with this outbreak.”

For the WHO to declare Nigeria as Ebola-free, the country had to make it 42 days with no new cases (double the incubation period), verify that it actively sought out all possible contacts, and show negative test results for any suspected cases.