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.

Newfoundland and Labrador has tested more than 9,500 people, but a negative or positive result doesn't always provide a definitive answer. (Graham Hughes/The Canadian Press) Testing has become one ...

He then had two negative PCR tests — supposedly the definitive one — then a positive test before Saturday’s game against Pittsburgh. So out of the lineup, into 10-day limbo.

The United States reopened its land border to Canadians who are fully vaccinated against COVID-19 on Nov. 8, but a negative PCR test for any trip appeared to be a deterrent.