Climate change is forcing wildlife to move north — and they're bringing diseases with them

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A recent paper published in the journal Nature shows climate change is increasing the risk of those viruses crossing the species barrier and infecting humans. 

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Blacklegged ticks, also known as deer ticks, were once a rare sight across Canada. Today, they are found across large parts of Ontario and other provinces, and more during the year than ever before.

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This has also led to a major increase in the number of cases of Lyme disease — an inflammatory disease that can start as a rash, headache, fever and chills, and develop into more serious issues like arthritis, long-lasting fatigue, and neurological and cardiac problems.

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These ticks are one of many species undergoing a range shift — moving north because of climate change.

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