Symptoms of myocarditis or pericarditis linked to the vaccine generally appear within a few days, and mostly within the first few weeks after having the vaccine. These conditions are usually caused by viral infections (including COVID-19), but they are also very rare and serious side effects of the Pfizer and Novavax vaccines. Myocarditis is inflammation of the heart muscle, while pericarditis is inflammation of the tissue forming a sac around the heart.

There are some side effects that are more serious but very rare, like a severe allergic reaction or an inflammation of the heart. Tell them you’ve had a COVID-19 vaccination so they can assess you properly. If you’re concerned about your safety, call 111. If you’re unsure about your symptoms or if they get worse, call Healthline: If you’re concerned about how you’re feeling Speak to your health professional promptly if you develop any of these symptoms. New onset chest pain, racing heart, or shortness of breath Seek advice from your health professional if your symptoms worsen. Paracetamol or ibuprofen can be taken, follow the manufacturer’s instructions. Muscle aches, feeling generally unwell, chills, fever, joint pain and nausea may also occur. Place a cold, wet cloth, or ice pack on the injection site for a short time.ĭo not rub or massage the injection site. These are the most commonly reported side effects. Pain at the injection site, a headache and feeling tired and fatigued. Most side effects appear within a day or two after being vaccinated. See details in the full Medsafe reports When you’re likely to experience a side effect Timeframe: 20 February 2021 to 30 November 2022 The top 10 reported side effects of the Pfizer vaccine in New Zealand are: Reaction Side effects are reported to the Centre for Adverse Reactions Monitoring (CARM) and Medsafe closely monitors and releases safety reports showing this data. Some side effects may temporarily affect your ability to drive or use machinery. Most side effects do not last long, and will not stop you from going about your daily life or having another vaccine dose in the future. This is common, and a sign that your body is learning to fight the virus. Like all medicines, you might experience some mild side effects in the days after getting your vaccination.

To have an effect on someone