Two Cases of Autochthonous West Nile Virus Encephalitis, Paris, France, 2025

We report 2 cases of febrile lymphocytic meningitis with encephalitis in patients in France. One patient had not traveled outside Paris; the other had traveled to eastern France. Laboratory findings revealed acute West Nile virus infection. The cases occurred days apart, raising concern the virus has spread further in France.

Author(s): Hassold-Rugolino Nolan, Jaquet Pierre, Da Silva Daniel, Papa Evangelina, Calmettes Julie, Henry Carole, Flamant Hilaire, Brière Etienne, Durand Guillaume André, Grard Gilda, Jabnoune Ines, Fournet Nelly, Harchaou Kamel, Bleibtreu Alexandre, Saliba Michelle, Gibelin Aude, Parisey Marion, Tandjaoui-Lambiotte Yacine

Publishing year: 2025

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