The new coronavirus pandemic has halted nearly all travel between Canada and the United States, but thousands of essential workers, such as nurses, doctors and truckers, continue to cross the border on an almost daily basis.
While people entering Canada are asked if they feel sick and are observed for signs of illness, Canada’s screening measures for COVID-19 at airports and border crossings do not include actual testing.
The frequency of travel between the two countries — especially between Windsor, Ont., and Detroit, Mich., which has become an epicentre for the global outbreak — has caused some local health officials to worry.