Tick population boom expected in Hamilton, Halton and Niagara regions

Experts are warning that ticks are on the rise in Ontario, with this summer season expected to bring higher risk of tick-borne diseases.

The most common ticks found in Hamilton, Halton and Niagara are American dog ticks and deer ticks — also known as blacklegged ticks. Blacklegged ticks are the only ticks known to carry Lyme disease in Ontario.

Ticks are typically found on long grasses and foliage on trails and parks, and can attach themselves to people and pets.

Experts suggest making frequent ticks checks every 10 – 15 minutes, wearing long pants and sleeves, and using tick repellent spray when spending time outdoors. Opting to wear light-coloured clothing can also make ticks easier to spot if they do latch on.

In Halton, a report was brought forward to the regional council, saying Lyme disease from blacklegged ticks was expected to rise again this summer. Halton authorities have tested 61 ticks so far this year, 23 of which came back positive for the bacteria that causes Lyme disease.

According to government data, reports of Lyme disease have been steadily increasing since 2009, with approximately 5,239 cases reported to provincial public health units in 2024.

It’s important to remove ticks as soon as possible. The risk of getting a tick-borne disease increases the longer the tick remains attached to skin.

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