As the federal government scrambles to bring Canadians home from foreign countries that have closed their borders and airports, provinces and territories are wrestling with what limitations need to be placed on internal travel to slow the spread of COVID-19 within Canada.

Over 335,000 people around the world have been infected with the novel coronavirus, and the death toll was creeping close to 15,000 Sunday. In Canada, there are now more than 1,400 confirmed cases, and at least 20 deaths, including four deaths announced at the same Quebec care home.

As countries around the globe scramble to stop the spread of the virus, slamming shut borders and cutting off international travel, Canadians woke up Saturday to a new reality: the world’s longest undefended border is no longer open for routine, casual traffic between Canada and the United States.

The ban on non-essential cross-border travel went into effect at midnight ET and will stay in place for at least 30 days as both countries scramble to curb the rapid spread of COVID-19.

Within Canada, Newfoundland and Labrador and Prince Edward Island are now requiring any one arriving in their provinces to self-isolate for 14 days, both domestic and international travellers. PEI added new screening measures at its borders to look for symptoms of COVID-19 among those arriving by car, ferry or air.

The Northwest Territories meanwhile ordered a ban to all arrivals except for existing residents looking to return home and some critical workers, including health care, law enforcement and people part of the supply chain for food, gasoline and other essentials.

The Northwest Territories reported its first confirmed case of COVID-19 Saturday, hours before the travel order was put in place. The north is considered to be among Canada’s most vulnerable locations to an outbreak of COVID-19, because of the limited health care access.

Northwest Territories travel order will also require individuals who do arrive in the territory to self-isolate in Yellowknife, Fort Smith, Hay River or Inuvik, hoping to keep any chance of someone with COVID-19 from spreading it to the smallest communities. Disobeying the order is punishable by a fine of up to $10,000 and six months in jail.

Northwest Territories chief public health officer Dr. Kami Kandola said the person diagnosed recently travelled to Alberta and British Columbia and is recovering at home in Yellowknife.

Health Minister Patty Hajdu said Saturday that closing internal borders is not something she wants to see happen but acknowledged it has been one of the things discussed between provinces and the federal government.

“That’s a very live issue right now that we’re talking about,” she said.

Hajdu stressed that locking down the entire country would be an extreme measure that could do more harm than good, if it cripples the ability to get food and other critical goods where they are needed. She noted China never locked down the entire country, rather it focused its most strict measures on the places where the outbreaks were the worst.

“Whatever we do as a country it has to be based on the best science available,” she said.

Dr. Howard Njoo, Canada’s deputy chief public health officer, said Saturday Canadians who have so drastically changed their daily lives to try and do their part to stop COVID-19, deserve a big thanks, but he warned people not to let up any time soon.

“There is no doubt our efforts are having an impact and not making these efforts is simply not an option,” he said.

Hajdu added her thanks to the Canadians who are heeding the advice, and warned people to brace for the fact that these precautions are not going to end any time soon.

“We will be in this situation for a while,” she said. “This is about months of social distancing.”

Canada already requires anyone who is returning to the country to self-isolate for 14 days whether or not they have symptoms. Hajdu warned Saturday that you may not feel too sick from COVID-19 but if you ignore the advice and spread the virus around, you can kill someone else.

Anyone who is already showing symptoms of the virus is not permitted to enter Canada, but Prime Minister Justin Trudeau and Foreign Affairs Minister Francois-Philippe Champagne both said Saturday there are some herculean efforts underway to bring as many Canadians home from abroad as possible.

It is not known how many Canadians are outside the country and struggling to find a way back, though Global Affairs Canada said Friday more than 430,000 people have registered with embassies abroad to let them know their whereabouts.

Champagne said any Canadians in countries where commercial flights are still available are expected to make their own arrangements but he is negotiating with countries that have closed airspace and borders to try and get Canadians out. An Air Canada flight from Morocco to Montreal was scheduled for Saturday, and additional flights are in the works to bring Canadians home from Peru and Spain. Negotiations are also underway with governments in India, the Philippines, and Ecuador, Champagne said.

Trudeau said Canada is helping to fund the cost of the flights but that passengers will be expected to pay “a responsible” price for a ticket. Champagne said the best thing for someone trapped abroad to do is register with the local embassy, and they will receive information via text message about what kind of assistance is available to them.

The government is warning that not everyone who is trying to get home will be able to find a way to do so.

“So we are going to ask people to stay safe, to make smart choices and do the best they can in a situation that is unprecedented, exceptional and very difficult,” Trudeau said.

Saturday night 444 Canadians who had been stuck in Morocco arrived in Montreal aboard an Air Canada commercial flight from Casablanca.

On Sunday Air Canada announced that, in collaboration with the Canadian Government, it will operate two more special flights from Morocco. These additional flights are currently scheduled to operate on March 23 and 25 from Casablanca to Montreal with a 450-seat wide-body aircraft.

“We are working extremely hard 24/7 to bring thousands of Canadians home safely from around the world and we will continue to do so. Our priority at this time is to ensure that we can repatriate as many people as possible. Both on our own and with the Government of Canada and foreign authorities, we are working to organize these massively complex operations in the current global crisis. In the last week alone, we have brought more than 200,000 people back to Canada and we plan to keep operating flights to the end of March and beyond so Canadians continue to have a way home.

“I thank all of those involved for their tireless efforts in coordinating this initiative during these extremely uncertain and difficult times,” said Calin Rovinescu, president and chief executive officer at Air Canada.

Foreign Affairs Minister Francois-Philippe Champagne also tweeted late Saturday night that he has been speaking with his counterparts in Australia, Brazil, Germany, Morocco, Peru, Turkey and the United Kingdom about how to safely repatriate citizens abroad, including those stuck on cruise ships.