It is possible to experience common side effects in the days following vaccination. While most side effects are generally mild and temporary, they might make you feel unwell for a short period and go away on their own. COVID-19 vaccines do not cause COVID-19 infection.
Some more common and expected side effects include one or more of the following:
Pain, redness or swelling where the needle was given, tiredness, headache, muscle pain, joint pain, chills, fever.
Allergic reactions, although rare, can occur after receiving a vaccine, just like with any other vaccines. Symptoms of an allergic reaction include hives (bumps on the skin that are often very itchy), swelling of your face, tongue or throat, or difficulty breathing. The clinic staff are prepared to manage an allergic reaction should it occur. Seek immediate medical care if you develop any of these symptoms.
Other very rare reactions reported after getting an mRNA COVID-19 vaccine include:
- Myocarditis and pericarditis (inflammation of the heart or lining on the outside of the heart)
- Bell's palsy (facial paralysis)
- A cold compress at the injection site may reduce discomfort.
- For discomfort and fever, ask your health-care provider what medicine is best for you or your child.
NEVER give Acetylsalicylic acid (ASA or Aspirin®) to children younger than 18 years because it can cause a severe liver and brain disease called Reye’s syndrome.
Any unexpected or serious reaction to a vaccine should be reported to your healthcare provider.