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Filovirus Post-Exposure Prophylaxis, preparedness and efficacy evaluation during outbreak in Central and West-Africa

Objective

In May 2026, a Bundibugyo virus disease (BVD) outbreak was reported in Democratic Republic of Congo (DRC), highlighting the urgent need for effective medical countermeasures, as no licensed vaccine or therapeutic is currently available against this Ebola species. The EBO-PEP project was funded by EDCTP in 2024 to evaluate a post-exposure prophylaxis (PEP) strategy against Ebola virus disease (EVD). Beyond its initial objective, EBO-PEP enabled the consortium to establish a robust outbreak research platform, designed as a preparedness tool rapidly activatable across filovirus species. The emergence of the current BVD outbreak in Eastern DRC provides the first opportunity to implement this framework. The consortium has adapted the EVD protocol to the BVD context, mobilizing the infrastructure, partnerships, and operational capacities already in place. Among the candidate interventions, obeldesivir (ODV), an orally administered broad-spectrum antiviral prioritized by the WHO R&D Blueprint, is evaluated as PEP in a randomized trial. Remdesivir (RDV), with an established safety profile in children and pregnant women, is proposed for vulnerable populations excluded from the randomized trial. The EBO-PEP consortium brings together African and European institutions with complementary expertise in filovirus research and clinical trial implementation in outbreak settings. The overall objective of this project is to increase the portfolio of therapeutic tools against BDBV by evaluating a PEP strategy for high-risk contacts in Eastern DRC. To address this objective, we focus our activities on two specific objectives: (i) to set up a randomized, placebo-controlled phase III clinical trial in Eastern DRC to test the efficacy of ODV used as PEP for high-risk contacts; and (ii) to set up a parallel prospective interventional cohort to generate evidence on the safety, feasibility, and effectiveness of RDV as PEP in children under 12 years and pregnant or breastfeeding women.

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Programme(s)

Topic(s)

Funding Scheme

HORIZON-JU-RIA - HORIZON JU Research and Innovation Actions

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Call for proposal

(opens in new window) HORIZON-JU-GH-EDCTP3-2026-01-EBOLA-IBA

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Coordinator

INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE
Net EU contribution
€ 2 025 765,70
Address
RUE DE TOLBIAC 101
75654 Paris
France
Region
Ile-de-France Ile-de-France Paris
Activity type
Research Organisations
Links
Total cost
€ 2 165 809,45

Participants (7)