Novavax "seems to be safe" potential side effects:

 Difficulty breathing  Swelling of your face and throat  A fast heartbeat  A bad rash all over your body  Dizziness and weakness  Myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the lining outside the heart)  Chest pain  Shortness of breath  Feelings of having a fast-beating, fluttering, or pounding heart

Side effects that have been reported in clinical trials with the Novavax COVID-19 Vaccine, Adjuvanted include:  Myocarditis (inflammation of the heart muscle)  Pericarditis (inflammation of the lining outside the heart)  Injection site reactions: pain/tenderness, swelling, redness and itching  General side effects: fatigue or generally feeling unwell, muscle pain, headache, joint pain, nausea, vomiting, fever, chills  Allergic reactions such as hives and swelling of the face  Swollen lymph nodes

Side effects that have been reported in post-authorization use with the Novavax COVID-19 Vaccine, Adjuvanted include:

 Severe allergic reactions  Myocarditis (inflammation of the heart muscle)  Pericarditis (inflammation of the lining outside the heart)  Paresthesia (unusual feeling in the skin such as tingling or a crawling feeling), hypoesthesia (decreased feeling or sensitivity, especially in the skin)