Middlesex-London Health Unit

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Vector-Borne Diseases

Vector-Borne Diseases are diseases that are passed on to humans through the bite of a ‘vector’. A ‘vector’ is a blood feeding insect or other organism that can pick up an infection from one host (a human or animal) and pass it on to another host through a bite. Some mosquitoes and tick species are examples of vectors. West Nile Virus and Eastern Equine Encephalitis are examples of Vector-Borne Diseases that can be passed on by mosquitoes. Lyme disease is an example of a Vector-Borne Disease that can be passed on by ticks.

  • Picture of a female blacklegged tickSubmit a Tick
    The Health Unit accepts tick submissions year round. Learn how to submit ticks.
  • Zika VirusZika Virus
    Access the latest information about Zika virus from Public Health Ontario.
  • Picture of a family hiking in the woodsPrevention and Personal Protection
    Lyme disease can spread through the bite of infected blacklegged ticks (deer ticks). Learn how to protect your family and prevent tick bites.
  • Picture of a blue jayReport a Dead Blue Jay or Crow
    Find out how to report a dead blue jay or crow for surveillance purposes.

What is Middlesex-London Health Unit’s role?

In Ontario, under the Ontario Public Health Standards, each health unit is required to develop a local vector-borne management strategy.

The Vector-Borne Disease program at the Middlesex-London Health Unit helps to prevent and reduce the risk of West Nile Virus, Eastern Equine Encephalitis and Lyme disease by:


Adult Mosquito

A picture of an adult mosquito biting a person


Education and Awareness

Picture of a bus shelter ad for Lyme Disease awareness

Additional Information

For more information on the activities carried out by the Vector-Borne Disease Team, please continue to browse this website, or call:

  • 519-663-5317 ext. 2300

For more information on Vector-Borne Diseases and human health, please continue to browse this website, or contact the Infectious Disease Control Team by calling:

  • 519-663-5317 ext. 2330

Date of creation: November 1, 2012
Last modified on: May 17, 2018