Differential neurovirulence of Usutu virus lineages in mice and neuronal cells

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Clé, Marion | Constant, Orianne | Barthelemy, Jonathan | Desmetz, Caroline | Martin, Marie France | Lapeyre, Lina | Cadar, Daniel | Savini, Giovanni | Teodori, Liana | Monaco, Federica | Schmidt-Chanasit, Jonas | Saiz, Juan-Carlos | Gonzales, Gaëlle | Lecollinet, Sylvie | Beck, Cécile | Gosselet, Fabien | van de Perre, Philippe | Foulongne, Vincent | Salinas, Sara | Simonin, Yannick

Edité par CCSD ; BioMed Central -

International audience. Usutu virus (USUV) is an emerging neurotropic arthropod-borne virus recently involved in massive die offs of wild birds predominantly reported in Europe. Although primarily asymptomatic or presenting mild clinical signs, humans infected by USUV can develop neuroinvasive pathologies (including encephalitis and meningoencephalitis). Similar to other flaviviruses, such as West Nile virus, USUV is capable of reaching the central nervous system. However, the neuropathogenesis of USUV is still poorly understood, and the virulence of the specific USUV lineages is currently unknown. One of the major complexities of the study of USUV pathogenesis is the presence of a great diversity of lineages circulating at the same time and in the same location.

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