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Moderna begins first human trial of Bundibugyo Ebola vaccine

By Thomson Reuters Aug 4, 2026 | 10:03 AM

Aug 4 (Reuters) – Moderna on Tuesday said it has begun its first human trial of an experimental vaccine to protect against Bundibugyo ebolavirus, a strain ​of Ebola that has killed more than ‌1,650 people so far and currently has no approved vaccine.

Health Canada has cleared an early-stage study and the first volunteers have already received the shot, called mRNA-1469, acording to the vaccine ‌maker. ​The experimental shot uses the same ⁠mRNA technology behind Moderna’s ⁠COVID-19 vaccine.

The trial, which will run at three sites in Canada, aims to enroll about 80 healthy adults to check if the vaccine is safe and ​triggers an immune response.

The work is part of an expanded partnership with the Coalition for Epidemic ⁠Preparedness Innovations, or CEPI, which has ⁠pledged up to $50 million to help ​fund the vaccine’s early testing and manufacturing.

The Bundibugyo strain is ​driving an outbreak in Democratic Republic of Congo ‌that has become the world’s second-largest Ebola outbreak on record, with 3,748 confirmed cases and 1,657 confirmed deaths reported as of August 1, according to the U.S. ⁠Centers for Disease Control and Prevention data.

The cases are increasing faster than during the 2014-2016 West Africa Ebola epidemic, which ⁠was the ‌largest on record, said CEPI chief executive ⁠Richard Hatchett.

The World Health Organization and Africa ​CDC ‌have both declared the current outbreak ​a public ⁠health emergency.

If the vaccine is eventually approved, Moderna said it plans to make at least 500,000 doses available to low- and middle-income countries at access pricing under its agreement with CEPI.

(Reporting by Kamal Choudhury in Bengaluru; Editing ​by Jonathan Ananda)