Enjoy a tick-safe summer in Canada

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Removal · ID · risks
Prevention — for Canada

!   Symptoms & response   !

What ticks can do.
And what to do about it.

Most tick bites in Canada are uneventful. The risk of serious disease is real but specific — concentrated in the blacklegged tick’s range, in attached ticks engorged for 24+ hours, and in a handful of identifiable diseases. Below is what to watch for, and where to go if it happens.

What's out there

Tick-borne diseases in Canada.

Seven illnesses worth knowing about. Each links to a deeper page with symptoms, the attachment window, treatment, and where it shows up in Canada.

Where to go

Pharmacist, doctor, or ER.

The right destination depends on what’s happening and when. Three tiers, in escalating order of urgency.

Pharmacist

When

Within 72 hours of a high-risk tick bite, no symptoms yet.

What

In Ontario: a pharmacist can prescribe a single preventive dose of doxycycline if criteria are met — deer tick, attached ≥24 hours, within 72 hours of removal, no allergy. Walk in with the tick on a card. See the removal page for full criteria. In other provinces this pathway varies — check with your local pharmacy regulator.

Walk-in clinic or family doctor

When

Symptoms appearing within 30 days of a bite.

What

Expanding rash (bullseye or solid red, anywhere on the body), unexplained fever, joint or muscle pain, severe fatigue, headaches that won’t quit, swollen lymph nodes. Bring the tick if you saved it. The earlier antibiotics start, the better the outcome.

Emergency room — call 911

When

Severe symptoms within a month of a bite.

What

Confusion, severe headache, neck stiffness, seizures, facial weakness on one side, sudden vision changes, difficulty breathing, anaphylaxis. These can be signs of Powassan virus encephalitis, late-disseminated Lyme, anaphylactic alpha-gal reaction, or other serious tick-borne illness. Don’t wait it out.

Tick testing

Two Canadian labs that test the tick itself.

Testing the tick is sometimes faster and more reliable than testing your blood, because the antibody response takes weeks to show up. If you saved the tick, two Canadian options:

Free

eTick.ca

A Canadian site (run by Bishop’s University) that identifies your tick from a photo. Free; usually back to you within a few days. Your submission also helps build the national tick-tracking map. etick.ca

Paid, PCR testing

Geneticks

Tests the tick itself by PCR for Borrelia (Lyme), Anaplasma, Babesia, Borrelia miyamotoi, and Powassan. Turnaround typically under a week. Cost varies by panel. geneticks.ca

A positive tick test means the tick carried a pathogen — not necessarily that it transmitted to you. A negative tick test is reassuring but not definitive. Treat the test result as one input alongside symptoms and exposure window, not as a yes/no answer.

Related

More from the field guide.

Last reviewed

General information only — not medical advice. In an emergency, call 911. Read the full disclaimer.

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