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abstractpubmed· Abstract 2019· item PMID:31538917

Possible Prognostic Value of Serial Brain MRIs in Powassan Virus Encephalitis. Powassan virus (POWV) encephalitis is a rare tickborne illness. We describe the clinical course, laboratory findings, and imaging for a patient with POWV in Massachusetts, USA. Clinical presentation and laboratory findings were nonspecific. Improvement on brain magnetic resonance imaging after 2 weeks preceded clinical improvement by months, suggesting possible prognostic value.