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Viruses 2013, 5(10), 2384-2409; doi:10.3390/v5102384

Vaccines in Development against West Nile Virus

*  and
Unité de Génomique Virale et Vaccination, INSTITUT PASTEUR, 28 rue du Dr Roux, Paris 75015, France
* Author to whom correspondence should be addressed.
Received: 21 August 2013 / Revised: 21 September 2013 / Accepted: 26 September 2013 / Published: 30 September 2013
(This article belongs to the Section Antivirals & Vaccines)
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West Nile encephalitis emerged in 1999 in the United States, then rapidly spread through the North American continent causing severe disease in human and horses. Since then, outbreaks appeared in Europe, and in 2012, the United States experienced a new severe outbreak reporting a total of 5,387 cases of West Nile virus (WNV) disease in humans, including 243 deaths. So far, no human vaccine is available to control new WNV outbreaks and to avoid worldwide spreading. In this review, we discuss the state-of-the-art of West Nile vaccine development and the potential of a novel safe and effective approach based on recombinant live attenuated measles virus (MV) vaccine. MV vaccine is a live attenuated negative-stranded RNA virus proven as one of the safest, most stable and effective human vaccines. We previously described a vector derived from the Schwarz MV vaccine strain that stably expresses antigens from emerging arboviruses, such as dengue, West Nile or chikungunya viruses, and is strongly immunogenic in animal models, even in the presence of MV pre-existing immunity. A single administration of a recombinant MV vaccine expressing the secreted form of WNV envelope glycoprotein elicited protective immunity in mice and non-human primates as early as two weeks after immunization, indicating its potential as a human vaccine.
Keywords: West Nile vaccine; West Nile virus; measles vaccine; recombinant live attenuated vaccine; flavivirus West Nile vaccine; West Nile virus; measles vaccine; recombinant live attenuated vaccine; flavivirus
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Brandler, S.; Tangy, F. Vaccines in Development against West Nile Virus. Viruses 2013, 5, 2384-2409.

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