Public Health Ontario is mapping at-risk areas for Lyme disease in 2019 after a high number in 2017.
Researchers are studying data to find out where ticks are and where they are spreading.
“Initially, these risk areas were located along the north shore of Lake Erie, and along the north shore of the St. Lawrence seaway,” said Public Health Ontario entomologist Mark Nelder.
However, there are new spots popping up in northwestern Ontario, Hamilton and Simcoe. Aside from natural expansion, Nelder said climate change could have to do with the spread, due to the temperatures becoming warmer.
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