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- Daphne A Stanley, Anna N Honko, Clement Asiedu, John C Trefry, Annie W Lau-Kilby, Joshua C Johnson, Lisa Hensley, Virginia Ammendola, Adele Abbate, Fabiana Grazioli, Kathryn E Foulds, Cheng Cheng, Lingshu Wang, Mitzi M Donaldson, Stefano Colloca, Antonella Folgori, Mario Roederer, Gary J Nabel, John Mascola, Alfredo Nicosia, Riccardo Cortese, Richard A Koup, and Nancy J Sullivan.
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA.
- Nat. Med. 2014 Oct 1;20(10):1126-9.
AbstractEbolavirus disease causes high mortality, and the current outbreak has spread unabated through West Africa. Human adenovirus type 5 vectors (rAd5) encoding ebolavirus glycoprotein (GP) generate protective immunity against acute lethal Zaire ebolavirus (EBOV) challenge in macaques, but fail to protect animals immune to Ad5, suggesting natural Ad5 exposure may limit vaccine efficacy in humans. Here we show that a chimpanzee-derived replication-defective adenovirus (ChAd) vaccine also rapidly induced uniform protection against acute lethal EBOV challenge in macaques. Because protection waned over several months, we boosted ChAd3 with modified vaccinia Ankara (MVA) and generated, for the first time, durable protection against lethal EBOV challenge.
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