
Although these side-effects are still rare, they are slightly more likely to occur after Moderna than after Pfizer. The risk of side-effects also depends on the age of the person and on the vaccine. These inflammatory conditions are seen most often in boys and younger men between 12 and 30 years old. The incidence of myocarditis and pericarditis ranges between 1 and 10 in 100,000 people per year. People who have these symptoms should consult their doctor. The symptoms can vary significantly and usually improve on their own or can be treated effectively with medication. Symptoms include shortness of breath, chest pain and a forceful heartbeat that may sometimes be irregular. The reports indicate that the cases of myocarditis and pericarditis mostly started within the first fourteen days after vaccination, and were more likely to occur after the second vaccination than after the first. This has been established by the European Medicines Agency (EMA) after reviewing reports from countries within Europe and beyond. In very rare cases, inflammatory diseases of the heart may occur following vaccination with Pfizer or Moderna: myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the outer lining of the heart). The website of the Dutch Medicines Agency (CBG-MEB) also offers more information about AstraZeneca and Janssen (in Dutch). More information is available on the page about AstraZeneca side-effects. If these symptoms do occur, they are usually seen within three weeks after vaccination. multiple tiny blood spots: red or purple dots or blisters under the skin.severe or worsening headache or blurred vision.swelling or a cold feeling in an arm or leg.It is important to contact medical professionals immediately if you develop these symptoms after vaccination with Janssen or AstraZeneca: The Health Council of the Netherlands advised using the Janssen vaccine in situations in which the advantage of a single vaccination (rather than 2 doses) is very significant.

The AstraZeneca vaccine is only given to people born in 1960 or before. Since the risk of this rare side-effect is very low, these vaccines are deployed for some specific groups. This side-effect is referred to as thrombosis with thrombocytopenia syndrome (TTS). In the context of the AstraZeneca and Janssen vaccines, this can involve a combination of blood clots (thrombosis) with low levels of blood platelets (thrombocytopenia). In very rare cases, more serious side-effects may also occur. Very rare and serious side-effect of Janssen and AstraZeneca vaccines See the questionnaire survey (in Dutch) by Lareb.įor a complete overview of the possible side-effects, see the vaccine package leaflets. Women and young people are more likely to have side-effects after vaccination. The number of people who experience these side-effects after vaccination differs depending on which vaccine they received. These symptoms start within a day or so after vaccination and go away by themselves, but can be unpleasant. Side-effects such as muscle pain, joint pain, chills, nausea and vomiting may also occur after vaccination with COVID-19 vaccines.


Side-effects such as fever, headache and tiredness occur after vaccination with COVID-19 vaccines in a significant proportion of those who are vaccinated. Most common side-effects of the COVID-19 vaccines
