Lyme Disease Risk

Lyme Disease Risk

Lyme disease is spread by blacklegged ticks. Your risk depends on **where you live**, **time of year**, and **what precautions you take**. This page lets you explore your risk for the **whole year** and for a **specific month**, and shows how simple steps (like using repellent and doing daily tick checks) can lower that risk.

Choose Your Inputs

Where are you located?

Which month are you curious about?

Do you use skin repellent (DEET or picaridin) when you’re in tick habitat?

Are you wearing permethrin-treated clothing?

Do you do a daily tick check and remove ticks within 24 hours?

Your Results

Annual chance (per person per year)

Monthly chance (for the month you selected)

Tip: Your risk drops a lot when you combine precautions — repellent, treated clothing, and quick tick removal after outdoor time.

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See the data page for all of the details on how these risks are calculated.

Initially created by GPT-5 Thinking