Adverse event following immunisation (AEFI)

An adverse event following immunisation (AEFI) is an unwanted or unexpected event following the administration of a vaccine(s).

An AEFI may be due to:

  • a person’s response to a vaccine component or the vaccination procedure, or
  • coincidence, i.e., it would have occurred regardless of vaccination, or
  • incorrect handling or administration of a vaccine.
Vaccine safety surveillance in Western Australia
About WAVSS
Who can report an AEFI in Western Australia?
What kind of AEFI should be reported?
How do I report an AEFI in Western Australia?
What happens to reports?
Can a patient be referred to a specialist immunisation service?
Last reviewed: 04-09-2024
Produced by

Public Health