How to read these charts
Where are these numbers from? The Canadian data here is compiled manually in the morning, afternoon and evening from the most recently available sources, including federal, provincial and territorial governments, Johns Hopkins University and COVID-19 Canada Open Data Working Group. Canadian death tolls may not include travellers or dual citizens who die abroad. Unless otherwise specified, international data is from the database of JHU’s Center for Systems Science, based on numbers from national and regional health authorities.
Check the vertical axis: When charts measure populations of very different sizes, the vertical, or Y, axis has to be larger or smaller to fit the numbers. Putting all charts on the same scale would make smaller numbers, and the trends they show, too hard to see. When comparing any two charts in this guide at a glance, especially for two different countries, please check how the scales differ.
What drops and spikes mean, and don’t mean: In the provincial and territorial data, you may see very sudden rises or falls in reported cases from one day to another. The key word is “reported.” Some health authorities changed their methods for reporting or testing as the pandemic spread (more on that below). That applies to other countries too: Some, like South Korea have tested large swaths of their population even if they show no symptoms; others, like the United States, have not.
Cumulative versus new: Many of these charts show cumulative cases of COVID-19, or the total number to date, which shows the overall burden populations and health systems have had to deal with so far. Daily tallies of new infections, like the ones you’ll see issued by provincial and territorial health authorities, can also be significant because they show whether epidemics are accelerating or in decline.
Confirmed versus presumptive: When Canadian health agencies test people for COVID-19 and get a positive result, they’re usually considered presumptive until the National Microbiology Laboratory in Winnipeg confirms it. That’s no longer the case in Quebec, which started counting hospital-verified results as confirmed in late March. The Canadian figures shown may combine confirmed and presumptive cases, whereas international data is confirmed only.
Confirmed versus recovered: When confirmed cases are shown, they include the number of recovered cases, though those are also charted separately. Health agencies are still figuring out how long it typically takes for a person’s COVID-19 symptoms to go away, and their processes for following up on infected people may vary.
Health authorities across Canada announce new cases daily, but at different times and with different methodology, so they may not always sync up with the national total on the federal government’s COVID-19 page. The numbers in the map below are confirmed and presumptive Canadian cases compiled from the most recently available numbers.
Cases by province and territory
We are tracking updates from each province and territory based on official government reports.
- B.C. does not report new case data on Sundays.
Visit B.C.’s provincial website for tracking case counts and latest information.
Visit Alberta’s provincial website for tracking case counts and latest information.
Visit Saskatchewan’s provincial website for tracking case counts and latest information.
Visit Manitoba’s provincial website for tracking case counts and latest information.
Visit Ontario’s provincial website for tracking case counts and latest information.
- On March 23, Quebec announced that cases tested positive by hospital labs are considered confirmed, resulting in a significant increase in numbers that day.
Visit Quebec’s provincial website for tracking case counts and latest information.
Visit New Brunswick’s provincial website for tracking case counts and latest information.
Prince Edward Island
Visit Prince Edward Island’s provincial website for tracking case counts and latest information.
Visit Nova Scotia’s provincial website for tracking case counts and latest information.
Newfoundland and Labrador
Visit Newfoundland and Labrador’s provincial website for tracking case counts and latest information.
Visit Yukon’s territorial website for tracking case counts and latest information.
Visit Northwest Territories’s territorial website for tracking case counts and latest information.
Visit Nunavut’s territorial website for tracking case counts and latest information.
Testing by province and territory
Not all jurisdictions test for COVID-19 in the same way, or to the same extent. Many restrict tests to high-risk cases, and some that initially tested those with mild symptoms – a useful early-warning system of community spread – stopped for fear of exhausting their resources. The two tabs in this chart show the provinces and territories’ testing per 100,000 population and the total tests performed to date.
These charts are powered by the Johns Hopkins database, which may be updated at different times than Canadian health agencies.
What can I do?
Slowing down the spread of COVID-19 is everyone’s responsibility now, from the governments and businesses telling people to stay home to the citizens and communities figuring out how to cope. Here are some of the resources The Globe has compiled to help you.
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