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revised Thursday June 04 2015

Mosquito & Tick-Borne


Mosquito & Tick-Borne Diseases

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Lyme disease, West Nile Virus and Eastern equine encephalitis (EEE) are vector-borne diseases.

A disease that is spread to humans and other animals by an insect or tick is called a vector-borne disease.

In Ontario:

  • Vectors are usually mosquitoes and ticks.
  • West Nile Virus and Lyme disease are the two most common vector-borne diseases that affect people.
  • Eastern equine encephalitis (EEE) is rare.
  • The EEE virus has only been found in horses and mosquitoes. No human cases have been reported to date.
Tick-Borne Diseases Mosquito-Borne Diseases
Tick-Borne Diseases Mosquito-Borne Diseases

For more information about Vector-Borne Diseases (VBD):

  • call us at 905-799-7700 from 8:30 a.m. to 4:30 p.m., Monday to Friday
  • Caledon residents call toll free at 905-584-2216, or
  • e-mail us

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Revised: Thursday June 04 2015

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