Common side effects following administration of the AstraZeneca vaccine are typically mild or moderate and are common of many vaccines (external link), including:
- pain at the site of injection
- body chills
- feeling tired
- feeling feverish
These are common side effects of vaccines and do not pose a risk to health. As with all vaccines, there’s a chance that there will be a serious side effect, but these are rare. A serious side effect might be something like an allergic reaction.
Ontario pauses use of AstraZeneca
On May 11, the Province announced it would be pausing the rollout and administration of first doses of the AstraZeneca COVID-19 vaccine (external link). The decision was made out of an abundance of caution and due to the increasing reports of the rare blooding clotting condition, known as vaccine-induced immune thrombotic thrombocytopenia (VITT), linked to the AstraZeneca vaccine.
Individuals should seek medical attention if they develop the following symptoms four or more days after receiving the AstraZeneca COVID-19 vaccine:
- shortness of breath
- chest pain
- leg swelling
- persistent abdominal (belly) pain
- neurological symptoms (such as sudden onset of severe or persistent worsening headaches or blurred vision)
- skin bruising or tiny blood spots under the skin beyond the site of the injection
If you experienced rare blood clots with unusual platelets following your first dose of the AstraZeneca COVID-19 vaccine, it is not recommended that you receive a second dose of any version of the AstraZeneca vaccine.
For more information on the safety of the AstraZeneca vaccine, please read Health Canada’s website (external link).