​​Adverse reaction reports summarise all reports of suspected adverse reactions that we have assessed. Events following vaccination are reported on the basis of suspicions, which means that there is not necessarily any causal relationship. The challenge is to distinguish symptoms and medical conditions which occur randomly from those which could be linked to vaccination. All reports are included in the report, regardless of whether or not an event is believed to be linked to vaccination.

Reports of serious events are given priority and assessed first. The figures therefore do not give a true picture of the distribution between serious and non-serious events.

Click here to go to an overview of reports of suspected adverse reactions (the adverse reactions report)

Young people more likely to experience common adverse reactions

Young people have a more active immune system than the elderly. As a result, they also tend to experience both stronger and more frequent common adverse reactions following vaccination, such as fever, headache and muscle pain.

- These very common adverse reactions tend to occur more frequently after the second dose. They can be troublesome, but they should pass. If they do not pass after 2-3 days or you experience other symptoms, you should contact a doctor,” says Senior Medical Consultant Ingrid Aas.

These common adverse reactions are a sign that the body is working hard to equip the immune system to deal with the coronavirus. We all respond differently to vaccines and you will be well-protected from COVID-19 infection even if you do not experience these adverse reactions.

Close monitoring

The monitoring of adverse reactions amongst children and adolescents is given a high priority. We are closely monitoring the situation and are particularly alert to reports of serious events following vaccination.

Report adverse reactions on behalf of children

Children under 16: Parents and guardians can report adverse reactions on behalf of their child.

Children over 16: Young people over the age of 16 can report adverse reactions themselves, but they will need an electronic ID, such as Bank-ID. Parents can report adverse reactions if a power of attorney has been set up. Power of attorney can be set up digitally via helsenorge.no.

Find out more about representing other people at helsenorge.no.

We urge children and young people who experience troublesome adverse reactions to contact a health professional, such as a public health nurse or doctor, for assessment and advice. Health professionals are obliged to report serious, new and unexpected reactions which they suspect may be caused by a vaccine.

How to report adverse reactions

Click here for a link to the report form and more information on how to report adverse reactions (information in Norwegian).

Please remember to include the following information when reporting adverse reactions:

  • name of the vaccine and date of vaccination
  • detailed description of the sequence of events
  • when the adverse reaction first started
  • whether the reaction is persistent or has passed
  • other current medical conditions and medication
  • if/when a COVID-19 test has been taken, and the result
  • whether the reaction occurred after the first or second dose
  • whether a different type of vaccine was given as the second dose
  • the results of any blood tests or other medical investigations
  • whether a doctor has been contacted (for those submitting a “patient report” via helsenorge.no)

It is particularly important to report reactions where any of the following are suspected:​​

  • new adverse reactions not referred to in the patient information leaflet
  • unexpected adverse reactions
  • serious adverse reactions
  • vaccine failure (severe COVID-19 following full vaccination) 
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