Canadian Prime Minister Justin Trudeau and his wife announced they were self-isolating on Thursday as she undergoes tests for the new coronavirus after returning from a speaking engagement with "mild flu-like symptoms."

Sophie Gregoire-Trudeau's symptoms have subsided since she recently got back from Britain, but as a precaution, the prime minister "will spend the day in briefings, phone calls and virtual meetings from home," according to a statement.

I have some personal news to share today. Sophie recently returned from a speaking event in the UK, and last night she was experiencing mild flu-like symptoms. She‘s feeling better, but following the advice of our doctor she is self-isolating as we wait on COVID-19 test results. — Justin Trudeau (@JustinTrudeau) March 12, 2020

Mr Trudeau also cancelled a meeting on Thursday and Friday with Canada's provincial and territorial leaders in Ottawa, but still planned to speak with them and world leaders by phone about measures being taken to curb the spread of the virus in Canada.

Ms Gregoire-Trudeau's symptoms had included "a low fever late last night."

She immediately sought medical advice and testing.

Mr Trudeau has exhibited no symptoms, and was advised by doctors "to continue daily activities while self-monitoring."

"However, out of an abundance of caution, the prime minister is opting to self-isolate and work from home until receiving Sophie's results," said his office.

Canada has so far reported more than 100 cases of COVID-19 in six provinces, and one death.