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Case reports detail west nile virus infection causing encephalitis in patients, suggesting further spread.
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.
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Hassold-Rugolino et al. (2025) studied this question.
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