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Powassan encephalitis

[ pə-wä′sən ]

n.

An acute disease of children varying clinically from undifferentiated febrile illness to encephalitis, caused by a tick-borne virus.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.