Powassan virus

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Po·was·san virus

 (pə-wä′sən)
n.
A flavivirus transmitted by ticks that can cause mild febrile illness as well as severe, sometimes fatal encephalitis and meningitis. It is endemic to northern North America and northeast Asia.

[After Powassan, Ontario, site of the first recognized fatality caused by this virus in 1958.]
References in periodicals archive ?
The virus was first diagnosed in 1958 in Powassan, Ontario, in a 5-year-old boy who died from encephalitis.
Q While parked on the shoulder of Highway 11 near Powassan, Ontario (a couple of hundred metres past a huge rock cut blasted in recent years to make way for two-laning), we came across a curious find and thought you might be able to help us identify it (that is, determine whether it's a fairly recent "thing" or a not-so-recent "thing").
Gateway to the Universe Star Party Powassan, Ontario, Canada Merlin Clayton, 705-472-1182; galaxy001@sympatico.