by Erika Check Hayden
Nature, 20 January 2016
With the Ebola outbreak in West Africa stubbornly hanging on, officials have brokered an agreement to ensure that a vaccine is available to fight future occurrences. On 20 January, Gavi, the Vaccine Alliance, announced that it has paid US$ 5 million to Merck, the manufacturer of the first Ebola vaccine shown to protect against the virus in a human clinical trial. The deal marks the first time that the public-health organization has committed to purchase a vaccine before it has been licensed.