Testing negative for the coronavirus isn't a guarantee that you don't have COVID-19, and experts say the high rate of false negatives could mean many cases aren’t being caught.

Starting on Thursday, travellers coming to Canada from China will need to show proof of a negative COVID-19 test to enter the country as China copes with an explosion of COVID-19 cases.

VANCOUVER — Airline passengers leaving China, Hong Kong and Macau will have to provide evidence of a negative COVID-19 test when they enter Canada starting today. The Canadian government announced ...

He was tested for the illness four times in Canada, but each time the test came back negative. In the last decade, cases of Lyme disease have risen dramatically in Canada, from 144 cases in 2005 ...