Note: On July 17, Quebec public health authorities changed the method used to calculate recoveries causing a signifcant drop in the number of Canada's active cases.

How to read these charts

Where are these numbers from? The Canadian data here is compiled manually at least once a day from the most recently available sources, including federal, provincial and territorial governments, Johns Hopkins University and COVID-19 Canada Open Data Working Group. Not all jurisdictions will update data every day, and their 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 on a larger or smaller scale 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, 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, or adjusted their schedules for releasing data.

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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 can also be significant because they show whether epidemics are accelerating or in decline.

Recovered versus active: When Canada’s cumulative cases are shown, they include recovered cases and deaths, though those are also charted separately. Subtracting recoveries and deaths from the total gives us the “active” cases, which you’ll see plotted in the top chart. Some provinces’ daily reports include their own active caseloads, but not all do. 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.

Confirmed versus presumptive: Originally, when Canadian health agencies tested people for COVID-19 and got a positive result, they were considered presumptive until the National Microbiology Laboratory in Winnipeg or a provincial lab confirmed it. Some health authorities stopped doing that, or recorded hospital-verified results as confirmed, so they could clear backlogs of tests faster. The Canadian figures shown may combine confirmed and presumptive cases, whereas international data is confirmed only.

Cases nationwide

Health authorities across Canada announce new cases at least once a week at different times, so the totals 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.

1 to 99 100 to 999 1,000 to 9,999 10,000+ cases Que. Ont. Alta. B.C. Sask. Man. Nunavut N.W.T. Yukon N.B. N.S. P.E.I. N.L. Repatriated Canadians: cases

Note: 1,317 confirmed cases from the month of April were added retrospectively in Quebec causing a spike on May 3, 2020. Refer to provincial tabs below for more notes on data irregularities. Source: GOVERNMENT WEBSITES Note: 165 additional deaths that were previously not reported in Quebec due to a data transmission problem were added on May 31 causing a spike on that day. Refer to provincial tabs below for more notes on data irregularities. Source: GOVERNMENT WEBSITES Note: Provinces and territories with no hospitalizations are not displayed.

Cases by province and territory

We are tracking updates from each province and territory based on official government reports.

Testing by province and territory

Not all jurisdictions test for COVID-19 in the same way, or to the same extent. Some that initially tested those with mild symptoms – a useful early-warning system of community spread – stopped for fear of exhausting their resources, only to start doing so again once they got more funding for mass tests. The two tabs in this chart show the provinces and territories’ testing per 100,000 population and the total tests performed to date.

Cases worldwide

These charts are powered by the Johns Hopkins database, which may be updated at different times than Canadian health agencies and may use different methodology for its final totals than The Globe’s charts.

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Cumulative cases for all countries Sources: JOHNS HOPKINS UNIVERSITY Show all

Countries with the most cases Cases per day with seven-day moving average Countries with the most deaths Deaths per day with seven-day moving average Source: JOHNS HOPKINS UNIVERSITY

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