Lyme disease is one of the most common vector-borne diseases in North America, affecting thousands of people per year. As global climate warms, deer ticks are migrating north, which means more people are at risk of contracting the disease. As global climate continues to warm, Lyme disease risk in Canada is expected to increase even more. “The first cases of Lyme disease in Quebec were in the late 1990s,” said Kotchi. “Lyme has been expanding in Canada ever since.” According to the Public Health Agency of Canada, Lyme disease cases in Canada increased from 144 people infected in 2009 to 992 in 2016.