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Middlesex-London Health Unit

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Vector-Borne Disease - Statistics and Trends

The following is a summary from the Vector-Borne Disease Team's seasonal highlights.

Mosquitoes

Year# of West Nile Virus Positive Traps# of West Nile Virus Human Cases# of Mosquito Treatments# of Catch Basins Completed

2022

0

0

326 27,325

2021

1

0

958 63, 171

2020

1

1

1253 108,381
  • There have been 0 reported human cases of Eastern Equine Encephalitis (EEE) in Middlesex-London.
  • There have been 0 mosquitoes caught in Middlesex-London that are capable of carrying Zika Virus.

Ticks Submitted to the Middlesex-London Health Unit

Total 102 74 14 40 21 5 27 13 1
 # of Non-Vector Ticks Submitted# of Blacklegged Ticks Acquired Within Middlesex-London# of Blacklegged Ticks Acquired Outside of Middlesex-London
2020 2021 2022 2020 2021 2022 2020 2021 2022

January

0

0

0

2 0 0 0

0

0

February 0 0 0 0 0 0 0 0 0
March 0 0 0 3 0  0 4 1 0
April 3  16 0 3 11  1 3 8 0
May 28  23  3 2 4 4 0
June 49  24 11  5 2 4 1
July 13 7   1 0   1 0  
August 4 4   0 0   0 0  
September 5 0   3 0   1 1  
October 0 0   11 2   6 1  
November 0 0   10 2   4 1  
December 0 0   0 0   0 0  

In the case of Lyme disease, a 'vector' is the term used to describe a tick species that can transmit (pass) Lyme disease through a bite. Blacklegged ticks are capable of transmitting Lyme Disease in Ontario. Other 'non-vector' ticks cannot transmit Lyme disease. View the Lyme Disease web page for more information.

Active Tick Surveillance in Middlesex-London

Year Number of Blacklegged Ticks Found Tick Dragging
2022 1
2021 34
2020 107

Lyme Disease Cases in Middlesex-London

Year Number of Confirmed/Probable Human Lyme Disease Cases in Middlesex-London Residents
2022 8
2021 5
2020 2

Vector-Borne Disease Surveillance Reports

Additional Information

For more information about the Vector-Borne Disease Team or information about Vector-Borne Diseases and human health, please continue to browse our website, or call the Health Unit at 519-663-5317.

 
Date of creation: April 18, 2018
Last modified on: July 5, 2022