COVID-19 pandemic in Canada
The COVID-19 pandemic in Canada is part of the ongoing worldwide pandemic of coronavirus disease 2019 (). It is caused by severe acute respiratory syndrome coronavirus 2 (). The virus was confirmed to have reached Canada on January 27, 2020, after an individual who had returned to Toronto from Wuhan, Hubei, China, tested positive. 

In early April 2020, the Government of Canada released modelling anticipating between 11,000–22,000 deaths over the course of the pandemic, assuming "stronger epidemic control". Most cases over the course of the pandemic have been in Ontario, Quebec and Alberta. Confirmed cases have been reported in all of Canada's provinces and territories. Until March 2020, all cases had been linked to travel to a country with a substantial number of cases. The first case of community transmission in Canada was confirmed in British Columbia on March 5. In March 2020, as cases of community transmission were confirmed, all of Canada's provinces and territories declared states of emergency. Provinces and territories have, to varying degrees, implemented school and daycare closures, prohibitions on gatherings, closures of non-essential businesses, restrictions on entry. Canada severely restricted its border access, barring travellers from all countries with some exceptions. The federal Minister of Health invoked the "Quarantine Act", introduced following the 2002–2004 SARS outbreak. For the first time in its legislative history, the act has been used, legally requiring all travellers (excluding essential workers) returning to the country to self-isolate for 14 days.

By mid to late summer of 2020, the country saw a steady decline in active cases until the beginning of late summer. Through autumn, the country saw a resurgence of cases in all provinces and territories. On September 23, 2020, Prime Minister Trudeau declared that Canada was experiencing a "second wave" of the virus. New restrictions and reactions from provincial governments were put in place once again as cases increased, including variations of regional lockdowns. In late November, there was the disbandment of the Atlantic Bubble, a travel-restricted area of the country (formed of the four Atlantic provinces: New Brunswick, Prince Edward Island, Nova Scotia, and Newfoundland and Labrador) which had been established in July 2020. The federal government passed legislation to approve further modified economic aid for businesses and individuals. 

Nation-wide cases, hospitalizations and deaths spiked preceding and following the Christmas and holiday season in December 2020 and January 2021. Alarmed by hospital capacity issues, fatalities and new cases, heavy restrictions (such as lockdowns and curfews) were put in place in affected areas (primarily Ontario, Quebec, and Alberta) and across the country. These lockdowns resulted in active cases beginning to steadily decline, reaching a plateau in active cases in mid-February 2021. During a third wave of the virus, cases began rising across most provinces west of Atlantic Canada in mid-March, prompting further lockdowns and restrictions in the most populous provinces like Ontario and Quebec. Due to a relatively low volume of cases in the Atlantic provinces, plans to reopen the special travel restricted area known as the Atlantic Bubble, however, in late April, the third wave had spread to the Atlantic provinces as well. In response, Prince Edward Island and Nova Scotia reinstated travel bans toward the rest of the country.

Following Health Canada's approval of the Pfizer–BioNTech COVID-19 vaccine, and later the mRNA-1273 vaccine developed by Moderna, mass vaccinations began nationwide on December 14, 2020. On February 26, 2021, Health Canada approved the Oxford–AstraZeneca COVID-19 vaccine for use and on March 5, 2021, they additionally approved the Johnson & Johnson COVID-19 vaccine for a total of four approved vaccines in the nation.
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