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Encyclopedia > Powassan virus

The Powassan virus is a tick-borne encephalitis virus related to the classic TBE flavivirus. Tick-borne meningoencephalitis or Tick-borne encephalitis is a tick-borne viral infection of the central nervous system affecting humans as well as most other mammals. ... Species see text Flavivirus is a genus of the family Flaviviridae. ...


This disease had its earliest origins in the town of Powassan, Ontario, found in a young boy who eventually died from it. Motto: Ut Incepit Fidelis Sic Permanet (Latin: Loyal she began, loyal she remains) Official languages English (de facto) Capital Toronto Largest city Toronto Lieutenant-Governor James K. Bartleman Premier Dalton McGuinty (Liberal) Parliamentary representation  - House seats  - Senate seats 106 24 Area Total  - Land  - Water  (% of total)  Ranked 4th 1,076...


Time of Transmission

The Powassan virus can be transmitted in less than 15 minutes of tick attachment.


The Deer Tick Virus

There is a relatively recently identified genotype of the Powassan virus called the Deer Tick Virus.


References

  • Ebel GD, Kramer LD.

Short report: duration of tick attachment required for transmission of powassan virus by deer ticks. Am J Trop Med Hyg. 2004 Sep;71(3):268-71. PMID: 15381804

  • Kuno G, Artsob H, Karabatsos N, Tsuchiya KR, Chang

Genomic sequencing of deer tick virus and phylogeny of powassan-related viruses of North America. Am J Trop Med Hyg. 2001 Nov;65(5):671-6. PMID: 11716135


 
 

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