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Updated: May 2, 2026

Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain
Published on: July 24, 2016
Evidence for influenza virus CNS invasion along the olfactory route in an immunocompromised infant
Debby van Riel1, Lonneke M Leijten1, Rob M Verdijk2
1Department of Viroscience.
Abstract:
Central nervous system (CNS) disease is the most common extrarespiratory complication of influenza in humans. However, the pathogenesis, including the route of virus entry, is largely unknown. Here we present, for the first time, evidence of influenza virus entry into the CNS via the olfactory route in an immune-compromised infant. Since the nasal cavity is a primary site of influenza virus replication and is directly connected to the CNS via the olfactory nerve, these results imply that influenza virus invasion of the CNS may occur more often than previously believed.
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