Because they’re a larger group, there will naturally be more cases among vaccinated people than among unvaccinated people. Most people in Canada have been vaccinated. This means that even with high vaccine effectiveness, some vaccinated people will get sick, be hospitalized or die. While COVID-19 vaccines are highly effective at preventing severe outcomes such as hospitalization and death, vaccinated people can still get infected if exposed.
We’ve adjusted our update schedule to reflect changes in how often this data is reported to us. COVID-19 cases (n= Footnote 1) in Canada by date Footnote 2 as of ( )ĭata extracted on for cases between Decemand. We update this information as it becomes available. It also takes time for public health authorities to gather information on cases. This delay is a result of the time required to seek health care, get tested and receive results. This is the period of time (1 to 2 weeks) before the latest cases are reported to PHAC. The shaded area on the far right of Figure 3 represents a period of accumulating data. Updated: June 25, 2021, 9 am EST Epidemic curveĪs of June 25, 2021, 9 am EST, PHAC has received detailed case report data on cases.
It may change as we get more information about cases. The tables and figures below reflect detailed case information provided to the Public Health Agency of Canada (PHAC) by health authorities in the provinces and territories.
Many variants are being tracked across Canada and around the world. We collect evidence to determine if new variants meet the definition for a variant of concern or a variant of interest. We report the proportion of COVID-19 variants in Canada every week.
Sequencing reveals the genetic code of the virus, which tells us which variant is involved in a specific case of COVID-19. The Public Health Agency of Canada (PHAC) works with provincial and territorial partners and the Canadian COVID-19 Genomics Network (CanCOGeN) to sequence a percentage of all positive COVID-19 test results. There are several variants of interest that have mutations similar to variants of concern, but we don’t yet know if they pose a higher risk to public health. Before a variant of interest is considered one of concern, scientists and public health professionals must determine if the mutations result in an actual change in the behaviour of the virus. However, some mutations result in variants of concern or variants of interest.Ī variant of concern has mutations that are significant to public health. These changes are called mutations, and result in variants of the virus. All viruses, including COVID-19, change over time.