Background

An adverse event following immunisation (AEFI) is any untoward medical occurrence that happens following the administration of a vaccine. It can be coincidentally associated with immunisation, without necessarily being caused by the vaccine. A vaccine error is also considered an AEFI and may be related to the way a vaccine was stored, prepared or administered.  

Common side effects from vaccines are usually mild and short‑lasting. Severe side effects are rare. A list of common vaccine side effects can be found in The Australian Immunisation Handbook: Table: Common side effects following immunisation for vaccines used in the National Immunisation Program schedule.

Purpose

Monitoring vaccine safety during development and through post‑licensure adverse event surveillance are important ways both to ensure safe vaccination programs and to maintain community confidence in vaccines. 

Post-licensure monitoring is conducted via a number of different mechanisms. One of which is through reporting AEFI to jurisdictional and national authorities. Reporting AEFI allows the rapid investigation of any potential vaccine or system problem and ensures vaccinees get timely medical advice and support.  

Making a report

Any vaccinated individual, parent/guardian, immunisation provider or treating medical practitioner can report an AEFI. In some states and territories, healthcare professionals have a statutory responsibility to report significant or serious AEFIs. 

AEFI reports should be made to authorities in the jurisdiction where the vaccine was administered.

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It is important to note that the above services do not provide emergency care and are reporting services only.

If you require medical assistance please see your GP, local emergency department or dial 000 if immediate support is required.

Author: Rachael McGuire (MVEC Education Nurse Coordinator)

Reviewed by: Katie Butler (MVEC Education Nurse)

Date: December 2024

Materials in this section are updated as new information and vaccines become available. The Melbourne Vaccine Education Centre (MVEC) staff regularly reviews materials for accuracy.

You should not consider the information on this site to be specific, professional medical advice for your personal health or for your family’s personal health. For medical concerns, including decisions about vaccinations, medications and other treatments, you should always consult a healthcare professional.

MVEC acknowledges the traditional owners of the lands on which we live, work and educate. We pay our respects to their Elders, past, present and emerging.
We are committed to honouring Australian Aboriginal and Torres Strait Islander peoples’ unique cultural and spiritual relationships to the land, waters and seas.

About MVEC

The Melbourne Vaccine Education Centre (MVEC) is an educational website, developed with the aim of providing up-to-date immunisation information for both healthcare professionals and members of the public. We are based at Murdoch Children’s Research Institute (MCRI), a research organisation, and are affiliated with SAEFVIC (Surveillance of Adverse Events Following Vaccination in the Community), the Victorian Vaccine Safety Service.

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