Saskatchewan pushed the country past the dark threshold on Saturday, with 252 new cases reported and eight other deaths.
Earlier today, Ontario and Quebec, the two provinces hardest hit by the pandemic, each recorded day had more than 2,000 cases.
This is the fifth day in a row that Ontario has surpassed 2,000 new positive tests, with a total of 2,357 on Saturday.
The province, which is currently in emergency talks to consider additional health measures, also recorded 27 new deaths.
Five regions of Ontario are expected to be in the lockdown phase of the province as of Monday.
Quebec has recorded 2,038 new infections and 44 new deaths linked to the new coronavirus.
The last 100,000 cases have piled up in just 15 days across the country, marking the shortest period of growth since the pandemic was declared in March.
It took six months for Canada to register its first 100,000 cases of the virus, four more to reach 200,000, less than a month to reach 300,000 and 18 days to reach 400,000.
Meanwhile, vaccinations are now officially underway in all provinces, with New Brunswick the latest to launch its vaccination program.
Province delivered its first Pfizer-BioNTech COVID-19 vaccine this morning, to an 84-year-old resident of a long-term care facility.
Pauline Gauvin told the health worker who administered the injection that she felt comfortable having it and, after asking what her next step was in the process, Gauvin was informed that she could return to the waiting room.
“(I’m gonna) go and mingle with the crowd,” she said, smiling.
Other residents and healthcare workers were due to be vaccinated today as part of the province’s plan to administer the vaccine to 1,950 people.
New Brunswick has accepted an offer from the owner of a bluefin tuna exporting company in eastern Prince Edward Island for a loan of two freezers that can store the vaccine, which is to be kept at a temperature below -70 ° C.
This report by The Canadian Press was first published on December 19, 2020.