The U.N. envoy on Ebola on Tuesday hailed "extraordinary progress" against the outbreak in West Africa after new cases last week fell below 20 for the first time since mid-2014, but he warned it would take time to end the epidemic completely.
David Nabarro said that in the week to May 3 only nine new cases were reported in Guinea and the same number in neighboring Sierra Leone. Liberia once again had no new cases.
Nabarro said he was optimistic that Liberia would be declared Ebola-free on May 9, when it is due to reach the official . . .
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