Justin Trudeau and his wife Sophie Gregoire Trudeau arrive for a welcome ceremony for G7 leaders on the first day of the summit in La Malbaie, Quebec, Canada. File / AFP
It said Sophie Grégoire Trudeau was felling well and would remain in isolation.
"The Prime Minister is in good health with no symptoms. As a precautionary measure and following the advice of doctors, he will be in isolation for a planned period of 14 days," the statement added.
His office said the doctor's advice to the prime minister is to continue daily activities while self-monitoring, given that he is exhibiting no symptoms himself.
Justin Trudeau and Sophie Gregoire Trudeau hug on stage after the federal election at the Palais des Congres in Montreal. File / Reuters
"Also on the advice of doctors, he will not be tested at this stage since he has no symptoms. For the same reason, doctors say there is no risk to those who have been in contact with him recently,” the statement said.
The office said he would resume his duties on Friday.
Trudeau's wife issued a statement thanking those who have reached out.
"Although I'm experiencing uncomfortable symptoms of the virus, I will be back on my feet soon," she said. "Being in quarantine at home is nothing compared to other Canadian families who might be going through this and for those facing more serious health concerns.”
The couple have three children, but Trudeau's wife is the only member of the family with symptoms, the prime minister's office said.
Though self-quarantining himself, Trudeau is spending the day in briefings, phone calls and virtual meetings from home, including speaking with other world leaders and joining a special cabinet committee discussion on the coronavirus. Trudeau spoke with US President Donald Trump and British Prime Minister Boris Johnson.
But Trudeau did cancel an in-person meeting with Canada's provincial premiers.
Opposition NDP leader Jagmeet Singh was also working from home after feeling unwell. Singh said he had been in contact with a doctor and they do not believe he has the virus but was advised to limit contact with the public until he feels better.
Ontario, Canada's most populous province, is closing schools until April 5.
Quebec Premier Francois Legault is asking all people returning from travel abroad to self-isolate for 14 days. The measure will be mandatory for all government employees.
He is also asking organisers to cancel all indoor events attracting crowds of more than 250 people and all other large gatherings that are not considered essential. Alberta and British Columbia are also urging all events with more than 250 people be cancelled.
Canada has more than 140 confirmed cases, with one death — an elderly nursing home resident in British Columbia. The United States has had 40 deaths, with more than three-fourths of them in Washington state. As of Thursday afternoon, the Centers for Disease Control and Prevention reported about 1,260 US illnesses.
Alberta Premier Jason Kenney also asked people to self-isolate if they are returning from overseas.
"We are now recommending that anybody over the age of 65 to avoid traveling outside the province if they can avoid it," Kenney said.
India has also closed a border with neighbouring Myanmar to counter the coronavirus outbreak, as countries across South Asia reported a rise in cases on Wednesday. No cases have so far been confirmed in Myanmar.
The Gulf Co-operation Council (GCC) nationals wishing to enter the UAE should undergo COVID-19 medical test and place themselves under house quarantine for 14 days, said a statement issued by the Ministry of Foreign Affairs and International Cooperation on Friday.
"We are deeply concerned both by the alarming levels of spread and severity and by the alarming levels of inaction. We have therefore made the assessment that COVID-19 can be characterised as a pandemic," WHO Director General Tedros Adhanom Ghebreyesus told a news conference on Wednesday.
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Cases have fallen steadily in some Indian states hit by an initial surge in infections, such as the richest state of Maharashtra and the capital New Delhi, after they imposed stringent lockdowns. Testing rates also at their lowest since Sunday.
The NCOC late last month announced a new set of restrictions including a blanket ban on tourism and inter-provincial transport in an attempt to contain a further rise in already mounting coronavirus cases under the "Stay Home, Stay Safe” strategy.