CANVAS-COVID Study Results
Results as of: April 19, 2023 | View results for kids
CANVAS-COVID Adults:
Monitoring the safety of COVID-19 vaccines in Canada
Vaccination dose received and survey completed:
DOSE 1
survey completed
681,725
DOSE 2
survey completed
369,937
What is a health event?
Health events are any changes to your health after getting vaccinated, which may include worsening of an existing health condition.
Dose 1:
52%
Dose 2:
53%
of people experienced pain, swelling, or redness at the injection site
After dose 1:
91%
of people did not develop any other health events within 7 days of receiving their first dose
95%
of people did not develop a new health event within 7 days that prevented daily activities,
work or required a medical visit
After dose 2:
91%
of people did not develop any other health events within 7 days of receiving their second dose
95%
of people did not develop a new health event within 7 days that prevented daily activities,
work or required a medical visit
Most frequent other health events reported:
Dose 1:
Dose 2:
4.6%
6.0%
Flu-like symptoms
(such as fatigue, muscle ache, feeling unwell)
3.4%
4.3%
Headache or migraine
2.0%
2.3%
Nausea, vomiting, diarrhea
| Dose 1 | Dose 2 | Symptoms |
|---|---|---|
|
4.7% |
6.0% |
Flu-like (such as fatigue, muscle ache, feeling unwell) |
|
3.4% |
4.6% |
Headache or migraine |
|
2.1% |
2.3% |
Nausea, vomiting, diarrhea |
Other events of interest:
Shingles is not occurring more frequently after vaccination
VACCINATED GROUP
0.03%
UNVACCINATED GROUP
0.03%