As Canadians and Americans send their children to camp or head out for annual camping trips, local public notices flood the airwaves — or inboxes — with warnings about all manner of insects and the diseases they transmit. One of the most debilitating of these is Lyme disease, which is caused by the bite from infected blacklegged ticks. According to the Public Health Agency of Canada, not all ticks are infected with the bacterium Borrelia burgdorferi, but the numbers are increasing and their …