CANVAS-COVID Study Results

Results as of: May 11, 2022 | 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

683,577

DOSE 2

survey  completed

371,282

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:

Covid_Survey_graphics_InjectSitePain

52%

Dose 2:

Covid_Survey_graphics_InjectSitePain

53%

of people experienced pain, swelling, or redness at the injection site

After dose 1:

0%

91%

of people did not develop any other health events within 7 days of receiving their first dose

0%

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:

0%

91%

of people did not develop any other health events within 7 days of receiving their second dose

0%

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:

4.7%

6.0%

Flu-like symptoms

(such as fatigue, muscle ache, feeling unwell)

3.4%

4.3%

Headache or migraine

2.1%

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%